Chuckanut Village Marsh Water Quality …...Chuckanut Bay (NES 2008). The Chuckanut Creek pocket...

Chuckanut Village Marsh Water Quality Improvement

Monitoring Report CCWF Grant Number G0900085

City of Bellingham Environmental Resources Division

Public Works Department 2221 Pacific Street

Bellingham, WA 98229

Prepared: July 2013

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City of Bellingham

Chuckanut Village Marsh Water Quality Improvement i

Monitoring Report 2013

Executive Summary This technical report summarizes water quality monitoring data collected at

Chuckanut Village Marsh in Bellingham, Washington. The City of Bellingham

Public Works Department, Natural Resources Division conducted the water

quality monitoring from April 2010 through June 2013 to document possible

hydrologic and water quality changes resulting from the Chuckanut Village

Marsh culvert removal project (“the project”) completed in March 2011.

The Chuckanut Village Marsh (also known as the Fairhaven Street Marsh,

hereafter referred to as “the marsh”) is located at the west end of Fairhaven

Avenue in Bellingham, Washington (Figure 1). The marsh is a wetland complex

adjacent to a marine pocket estuary at the northern end of Chuckanut Bay, north

of Chuckanut Creek. One of the goals of the culvert removal project was to

remove an undersized culvert and enhance the outlet channel to provide juvenile

salmon increased access to rearing habitat in the marsh. The culvert removal

was anticipated to have a slight increase in water exchange between the marine

and terrestrial environments, potentially resulting in very minor improvements

to water quality, increased nutrient exchange and a slight increase in sediment

transport. The removal of the road, parking area and culvert were also designed

to provide increased intertidal habitat.

The objectives of the water quality monitoring were established to establish a

pre-project baseline and assess changes in water quality within the marsh

resulting from culvert removal. Four water quality parameters were monitored

within the marsh: temperature, dissolved oxygen, specific conductance, and

salinity. These parameters were selected to assess changes in tidal influence

within the marsh and suitability of the marsh as fish habitat. Water quality

monitoring was conducted at nine permanent water quality sampling stations.

Seven of the nine water quality stations were located within the delineated

wetland (marsh) area (Stations 3, 4, 5, 6, 7, 8, and 9). The remaining two (Stations

1 and 2) were situated on either side of the previous culvert location.

Monthly sampling began in April 2010 and ended in June 2013. Ten monthly

data sets were collected from each of the nine stations prior to the removal of the

culvert and 28 monthly data sets were collected after removal. If water was not

present at a station no data was collected. Data were only collected at a given

station when water depth was sufficient to fully submerge the water quality

probes. Since the marsh is tidally influenced and freshwater entering the system

City of Bellingham

Chuckanut Village Marsh Water Quality Improvement ii


is seasonal, water was not present at all stations during all sampling sessions.

This resulted in discontinuities in the data, making it difficult to detect data

trends in the limited sampling period.

The results presented in this report are based on visual interpretation of the data.

No statistical analysis was run as a part of this reporting. All nine permanent

water quality stations experienced periods where water was absent during the

sampling period. Station 1 was dry more frequently after the culvert

replacement; conversely Station 2 was dry less frequently after the replacement.

Water was present at Station 6 during all sampling periods except for a single

low tide event in August 2010. Data from a few DO, salinity, and specific

conductance measurements were omitted due to equipment or measurement

errors, still Station 6 had the most consistent record of the nine stations. Overall

the culvert removal did not appear to change the frequency of dry events at other

stations.

The culvert removal appears to have established a more regular connection

between the primary north/south ditch and the marine environment. The ditch is

influenced by freshwater inputs entering from the north and the marine tidal

influence from the south. Tidal influence changes beyond the primary ditch are

not clear from the available data. Prior to the culvert removal, data at the

sampling stations were scattered and patterns are difficult to detect due to the

limited sampling period and frequent dry periods. The data suggests that Station

3 is primarily influenced by freshwater flowing in the ditch from the east.

Stations 4, 5, 7, 8 and 9 interface with marine events, but not on a regular basis.

Station 1, 2 and 6 have a more consistent connection with the marine system, but

also are influenced by freshwater moving through the system.

Chuckanut Village Marsh appears to continue to provide high functioning

estuarine wetland habitat. The data indicates that since the culvert was removed

the water quality parameters are functioning in a similar manner as before the

culvert was removed. Increased tidal action is present near the outlet of the

marsh with evidence of occasional large marine inputs as evidenced by

photographs of marine algae drift in the interior of the marsh.

Based on the water quality monitoring and supplemental seining surveys

conducted pre and post project by the Whatcom County Marine Resources

Committee, the most influential change to fish habitat resulting from the culvert

removal project appears to be improved access to rearing habitat for juvenile

City of Bellingham

Chuckanut Village Marsh Water Quality Improvement iii


salmon. Other project related habitat benefits included the removal of vehicles

from the beach, the reestablishment of native vegetation in the previous parking

area, and increased community stewardship education.

If sampling continues, we recommend collecting the following additional data to

provide a greater understanding of the interaction of the marsh and the marine

system:

1. Continue seining surveys in the bay and within the marsh.

2. Monitor vegetation communities within the marsh five years after the

culvert removal to detect any change.

3. Monitor beach improvements such as vegetation re-establishment.

City of Bellingham

Chuckanut Village Marsh Water Quality Improvement iv



City of Bellingham

Chuckanut Village Marsh Water Quality Improvement v


Table of Contents 1.0 Introduction ................................................................................................................... 1

1.1 Report Purpose .......................................................................................................... 1 1.2 Background ............................................................................................................... 1 1.3 Project Description.................................................................................................... 4 1.4 Project Goals and Objectives .................................................................................... 6

1.4.1 Project Goals ...................................................................................................... 6 1.4.2 Monitoring Objectives ....................................................................................... 6

2.0 Monitoring Methods ..................................................................................................... 8 3.0 Results ......................................................................................................................... 12

3.1 Temperature ............................................................................................................ 13 3.2 Dissolved Oxygen ................................................................................................... 16 3.3 Salinity and Specific Conductance ......................................................................... 20

4.0 Discussion ................................................................................................................... 22 4.1 Water Quality Parameters ....................................................................................... 22 4.2 Conclusions ............................................................................................................. 26

5.0 Fish Presence .............................................................................................................. 26

5.1 Fish Access ............................................................................................................. 26 5.2 Fish Habitat Conditions .......................................................................................... 29 5.3 Conclusions ............................................................................................................. 30

6.0 Recommendations ....................................................................................................... 31

List of Figures Figure 1. Overview of the Marsh. ....................................................................................... 2 Figure 2. Pre-existing Culvert. ............................................................................................ 3 Figure 3. Vehicles parking on beach prior to culvert removal. .......................................... 3 Figure 4. Direct observation of marine algae washed into the marsh during a high tide

event. ................................................................................................................................... 4 Figure 5. New box culvert and pedestrian footbridge......................................................... 5

Figure 6. New pedestrian path between the footbridge and estuary. .................................. 5 Figure 7. New pedestrian path between the footbridge and estuary. .................................. 6 Figure 8. Study Boundaries................................................................................................. 8 Figure 9. Sampling Stations. ............................................................................................... 9 Figure 10. Surface sample temperatures at high tide. ....................................................... 14

Figure 11. Dissolved oxygen levels at high and low tides at Station 4. ........................... 19 Figure 12. Dissolved oxygen levels at different tidal elevations at Station 8. .................. 19 Figure 13. Dissolved oxygen levels at different tidal elevations at Station 4. .................. 23 Figure 14. Salinity levels at Station 2. .............................................................................. 23

Figure 15. Salinity levels at Station 6. .............................................................................. 24

City of Bellingham

Chuckanut Village Marsh Water Quality Improvement vi


Figure 16. Comparing salinity levels at Stations 2 and 6, high tide surface samples only.

........................................................................................................................................... 24 Figure 17. Salinity stratification at Station 6. ................................................................... 25 Figure 18. Salinity stratification at Station 8. ................................................................... 25 Figure 19. Sorting specimens during seining surveys. ..................................................... 27 Figure 20. Chinook salmon smolt from beach seine in Chuckanut Bay. .......................... 28 Figure 21. Temperatures and WRIA salmonid thresholds (Smith, 2002). ....................... 29 Figure 22. Dissolved oxygen levels and WRIA salmonid thresholds (Smith, 2002) ....... 30

List of Tables Table 1. Combined Water Temperature data from all Stations pre and post culvert

removal* ........................................................................................................................... 14

Table 2. Water Temperature data from Stations 1, 2, and 6 pre and post culvert removal*

........................................................................................................................................... 15 Table 3. Water Temperature data from Stations 3, 4, 5 and 7 pre and post culvert

removal* ........................................................................................................................... 16 Table 4. Water Temperature data from Stations8and 9 pre and post culvert removal* ... 16 Table 5. Combined Dissolved Oxygen data from all Stations pre and post culvert

removal* ........................................................................................................................... 17

Table 6. DO data from Stations 1, 2, and 6 pre and post culvert removal* ..................... 17

Table 7. DO data from Stations 3, 4, 5 and 7 pre and post culvert removal* ................... 18

Table 8. DO data from Stations 8 and 9 pre and post culvert removal* ........................... 19

Table 9. Combined Salinity data from all Stations pre and post culvert removal* .......... 20 Table 10. Salinity data from Stations 1, 2, and 6 pre and post culvert removal* ............. 21 Table 11. Salinity data from Stations 3, 4, 5 and 7 pre and post culvert removal* .......... 21

Table 12. Water DO data from Stations 8 and 9 pre and post culvert removal* .............. 22

Table 13. MRC seining survey results .............................................................................. 28

Appendices A. References

B. Water Quality Data

C. Graphs

D. Station Photographs

City of Bellingham

Chuckanut Village Marsh Water Quality Improvement 1


1.0 Introduction

1.1 Report Purpose

This technical report summarizes water quality monitoring data collected at

Chuckanut Village Marsh in Bellingham, Washington. The City of Bellingham

Public Works Department, Natural Resources Division conducted the water

quality monitoring from April 2010 through June 2013 to document possible

hydrologic and water quality changes resulting from the Chuckanut Village

Marsh culvert removal project (“the project”) completed in March 2011. This

report was prepared in accordance with the project’s Quality Assurance Project

Plan (QAPP) (City of Bellingham [COB] 2010).

1.2 Background

The Chuckanut Village Marsh (also known as the Fairhaven Street Marsh,

hereafter referred to as “the marsh”) is located at the west end of Fairhaven

Avenue in Bellingham, Washington (Figure 1). The marsh is a wetland complex

adjacent to a marine pocket estuary at the northern end of Chuckanut Bay, north

of Chuckanut Creek. The marsh is located on the north side of Fairhaven

Avenue and extends from the marine mean high water line eastward to the edge

of the developed area and north to the toe of a southeast-facing slope below Sea

Pines Road. Surface flow exiting the marsh is directed into a primary channel.

The channel enters the marsh in the northeast and exits near the southwest

corner. The channel crosses under Fairhaven Avenue before outflowing into

Chuckanut Bay (NES 2008). The Chuckanut Creek pocket estuary provides the

highest functioning habitat of its type in the City of Bellingham (NES 2006).

Furthermore, the marsh provides moderate to high water quality and hydrologic

wetland functions as defined by the Western Washington Wetland Rating

System (NES 2008).

City of Bellingham



Figure 1. Overview of the Marsh.

Prior to implementation of the project, an unpaved access road extended from

Fairhaven Avenue to a gravel parking area on the beach. Vehicle access to the

beach resulted in degradation of natural vegetation and pollutants from cars

entering the marine system. The marsh was connected to Chuckanut Bay by an

18-inch diameter culvert which extended for 27 feet under Fairhaven Avenue at a

slope of 1.1%. The culvert likely restricted fish passage between the marine

system into the marsh based on its size and position (NES 2008, Coastal Geologic

Services 2007).

City of Bellingham



Figure 2. Pre-existing Culvert.

Figure 3. Vehicles parking on beach prior to culvert removal.

City of Bellingham



The findings from the Chuckanut Village Marsh Characterization indicated that

the marsh was influenced by the adjacent marine system, but at only high tides

equal to or greater than 9.0+ feet influenced the majority of the marsh (NES 2008).

Tides of this height typically occur around 100 times a year and were indicated to

be important in maintaining the marsh vegetation communities (NES 2008)

(Figure 4). The marsh outlet stream and the marine water were connected at tides

of 6.6+ feet, events that typically occur more than 600 times a year. Fish may have

had the potential to enter and exit the marsh from the marine system during

tides of 6.6+ and above (NES 2008).

Figure 4. Direct observation of marine algae washed into the marsh during a high tide event.

1.3 Project Description

The project involved removing vehicle access to the marine beach; removing the

18-inch culvert and replacing it with an 11 foot long by 6 foot wide bottomless

concrete box culvert; removing derelict concrete structures in the nearshore; the

addition of a pedestrian footbridge on top of the box culvert; restoring the

previous parking area with native vegetation; and providing alternative parking

away from the beach and marsh. Educational signage and a pet waste station

were also included in the project. The project was completed in March 2011.

City of Bellingham



Figure 5. New box culvert and pedestrian footbridge.

Figure 6. New pedestrian path between the footbridge and estuary.

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Figure 7. New pedestrian path between the footbridge and estuary.

1.4 Project Goals and Objectives

1.4.1 Project Goals One of the goals of the project was to remove an undersized culvert and enhance

the outlet channel to provide juvenile salmon increased access to rearing habitat

in the marsh. The culvert removal was anticipated to have a slight increase in

water exchange between the marine and terrestrial environments, potentially

resulting in very minor improvements to water quality, increased nutrient

exchange and a slight increase in sediment transport. The removal of the road,

parking area and culvert were also designed to provide increased intertidal

habitat (NES 2008).

The following monitoring objectives were established to assess the effects of the

removal of the culvert on the water quality within the marsh (COB 2010).

1.4.2 Monitoring Objectives 1. Establish baseline water quality conditions prior to restoration of the

marsh (removal of the culvert).

2. Continue water quality monitoring after completion of the restoration

(post culvert removal) project in order to document changes in water

quality conditions at the marsh.

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Four water quality parameters were monitored within the marsh: temperature,

dissolved oxygen, specific conductance, and salinity. These parameters were

selected to assess changes in tidal influence within the marsh and suitability of

the marsh as fish habitat.

Water temperature is an important measure of water quality because all aquatic

organisms are dependent upon certain temperature ranges for optimal health

and reproduction. Water temperature also has a direct impact on dissolved

oxygen levels (COB 2010).

Aquatic organisms require oxygen to survive. Oxygen in water is measured in

its dissolved form, dissolved oxygen (DO). Dissolved oxygen varies directly in

response to atmospheric pressure and water temperature. Higher atmospheric

pressure results in higher oxygen solubility in water and higher DO. Higher

temperatures result in lower oxygen solubility and lower DO. Photosynthesis by

aquatic plants and the turbulence of running water both increase DO. Dissolved

oxygen levels vary seasonally. Dissolved oxygen is also affected by inputs of

pollution. Feces from animals and failing septic systems, grass clippings, leaves

and woody debris, and urban and agricultural runoff all contain organic matter

that is decomposed by microorganisms, which consume oxygen in the

decomposition process and can thus reduce DO (COB 2010). Dissolved oxygen

varies inversely with salinity. Increasing salinity decreases the ability of water to

hold dissolved oxygen.

Specific conductance (SpC) and salinity are dependent on many factors. Natural

variation can be due to the type of rocks weathered in the watershed,

precipitation levels, the chemical composition of the precipitation (which is

largely dependent on distance from the ocean) and the relative contribution of

ground water to total flow (Allan 1995). Evaporation can also contribute to

increased SpC and salinity levels by concentrating ions in water. In urban

settings, pollution from point and non-point sources can contribute to the

amount of dissolved ions in water, increasing SpC and salinity. In marine

estuaries, SpC and salinity are heavily influenced by tidal action. Salinity and

temperature also affect the density of water, which can result in salinity

stratification (COB 2010).

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2.0 Monitoring Methods 2.1 Study Area Water quality monitoring stations were located within the five-acre wetland area.

Water quality stations were chosen to cover a range of potential tidal influence.

Figure 8. Study Boundaries.

2.2 Field Methodology Water quality monitoring was conducted at nine permanent water quality

sampling stations (Figure 9). Seven of the nine water quality stations were

located within the delineated wetland (marsh) area (Stations 3, 4, 5, 6, 7, 8, and 9).

The remaining two (Stations 1 and 2) were situated on either side of the previous

culvert location (COB 2010). Appendix D includes photographs of the station

locations.

City of Bellingham



Monitoring stations established for preliminary salinity testing in the 2008

wetland characterization study (NES 2008) were adopted for this water quality

monitoring program. Station 1 was located at the outlet of the preexisting

culvert, on the marine side. Station 2, 3 and 6 were located in internal drainage

ditches, which have a direct connection to tidal effects and provide potential fish

access. Stations 4, 5 and 7 were located in a lower elevation area, while Stations 8

and 9 were at higher relative elevations (COB 2010).

Figure 9. Sampling Stations.

Temperature, DO, specific conductance and salinity were the parameters

measured in situ at each of the nine sampling stations. Data were collected once

a month on a day which had a high tide exceeding 7.0 feet. Data from the high

and low tide conditions were collected at each sampling station during a single

sampling day. When sufficient water depth existed, two measurements were

taken at each station to detect any stratification: just below the water surface

(water quality meter probe submerged) and six inches below the water surface,

or the bottom, whichever was first. One set of field duplicate measurements was

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also collected per sampling day. This analysis focuses on surface water data

(collected in the upper six inches of the water column). Due to insufficient water

depths, it was not possible to collect data below six inches (e.g. bottom) at many

stations in number of cases. Therefore, this report has focused its discussion on

surface sample results (COB 2010).

A Quanta Hydrolab water quality meter was used for data collection. Each day

the Hydrolab was calibrated per manufacturer’s recommendations and QAPP

protocols prior to use, and a post-calibration check was conducted immediately

after calibration to ensure an accurate calibration. In the field, a duplicate sample

was collected at one station per day. A field duplicate is a second sample from

the same station using identical sampling procedures. After the station was

sampled (including both stratification measurements) the transmitter was

removed from the water for one minute. The station was then sampled a second

time using the same procedure. After field data collection, one additional post-

sampling check was conducted after use in the field to ensure that instrument

drift did not occur during use. Certified standards of known concentration were

used to assess the performance of the Hydrolab post-calibration and post-

sampling. The calibration checks were used to assess the quality of the data as

part of the data validation. All water quality data were evaluated against the

project measurement quality objectives (MQOs) defined in the QAPP (COB

2010).

All field monitoring results and observations were recorded on pre-printed data

sheets located in a designated project folder. Data sheets were checked for

legibility and completeness before leaving the site location (COB 2010).

Field data was entered into spreadsheets monthly and reviewed to ensure that all

data was validated before preparing the final project report. Validation involved

review of all data for possible transcription errors, missing data, and improbable

values when importing data from field sheets to the project spreadsheets (COB

2010).

Problems encountered in the field were recorded in field notes with reasons for

missing data or anomalous data points. If alternate sampling equipment was

used, these substitutions were documented and the data annotated in the final

report. If data were excluded from the data report, documentation will be

provided to explain the reason for its absence, including statements concerning

equipment malfunction, repair, or substitution (COB 2010).

City of Bellingham



All water quality data collected in support of these grants has been submitted to

the Washington State Department of Ecology’s Environmental Information

Management System (EIM) Database annually (COB 2010).

Chuckanut Village Marsh is located in an Area of Moderate Concern for aquatic

invasive species (Washington State Department of Ecology 2010). Therefore,

sampling was conducted using methods and inspectable equipment to minimize

contact with potential sources of aquatic invasive species. Only rubber boots and

waders were used for sampling; no felt-soled wading boots. All equipment,

including boots and water quality probes, were visually inspected for mud,

algae, plant parts and other debris and any such debris was cleaned by scrubbing

and rinsing until visually clean. Equipment was dried thoroughly after use.

Data verification is a quality assurance review process to determine the

completeness and quality of data. Data verification ensures that all quality

control samples meet the acceptance criteria as specified in the standard

operating procedure for that method. Preliminary data verification occurred in

the field before leaving the site. This included reviewing field notes for

completeness, errors and consistency. Duplicate measurements and

documentation of conditions in field notes support verification of field

measurements.

Field personnel ensured that methods and protocols specified in the Quality

Assurance Project Plan were followed, including instrument calibrations and

quality control checks. Evaluation criteria included the acceptability of

instrument calibrations, post-calibration and post-sampling calibration checks,

and results from duplicate field samples. Precision was estimated by calculating

the relative percent difference for field duplicate results. Analytical bias was

assumed to be within acceptable limits if quality control limits are achieved for

check standards. Sampling bias was assessed by verifying that the correct

sampling and handling procedures were used.

All data were reviewed to determine if results met measurement quality

objectives and verify that proper protocols were followed and that data were

consistent, correct, and complete. Based on these assessments, the data was

either; accepted, accepted with appropriate qualifications, or rejected. Reviewed

and validated data were submitted to the EIM database annually.

City of Bellingham



3.0 Results This report summarizes both baseline data collected approximately one year

prior to the culvert removal and two years post action. The results presented

herein are based on visual interpretation of the data. No statistical analysis was

run as a part of this reporting.

Monthly sampling began in April 2010 and ended in June 2013. Ten monthly

data sets were collected from each of the nine stations prior to the removal of the

culvert and 28 monthly data sets were collected after removal. If water was not

present at a station no data was collected (Appendix B). Data were only collected

at a given station when water depth was sufficient to fully submerge the water

quality probes. Since the marsh is tidally influenced and freshwater entering the

system is seasonal, water was not present at all stations during all sampling

sessions. This resulted in discontinuities in the data, making it difficult to detect

data trends in the limited sampling period. Appendix B to this report includes

the raw water quality data and Appendix C includes graphs based on the raw

data.

Data reported within this analysis include surface water measurements recorded

at high and low tides for each of the four water quality parameters described

above. For the purpose of this report, bottom water measurements are only

included in the discussion regarding stratification (Section 4.0 Discussion,

below), as most stations did not have sufficient depth most of the time to provide

“bottom” readings.

All nine permanent water quality stations experienced periods where water was

absent during the sampling period. Station 1 was dry more frequently after the

culvert replacement; conversely Station 2 was dry less frequently after the

replacement. Water was present at Station 6 during all sampling periods except

for a single low tide event in August 2010. Data from a few DO, salinity, and

specific conductance measurements were omitted due to equipment or

measurement errors, still Station 6 had the most consistent record of the nine

stations. Overall the culvert removal did not appear to change the frequency of

dry events at other stations.

The results for each of the four parameters are described in the sections below.

The results are grouped according to their location in the marsh:

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Stations 1, 2 and 6: these stations are all located along the primary ditch

within the marsh. Stations 1 and 2 provide a pathway for fish access and

Station 6 provides potential fish rearing and foraging habitat.

Stations 3, 4, 5 and 7: these stations are located off the main ditch and

within the interior of the marsh and do not provide direct fish habitat; and

Stations 8 and 9: these stations are located furthest and are most isolated

from the ditch and also do not provide direct fish habitat.

For each of the four parameters, data is presented in two table formats. The first

table format (Tables 1, 5, and 9) is a summary of high and low tide data and

bottom and surface data combined. This summary table format presents mean,

median, minimum, maximum and range of each data set and shows general

overall trends within a parameter before and after the culvert removal. The

second table format (Tables 2, 3, 4, 6, 7, 8, 10, 11, and 12) only includes data from

select stations and only include data from high tide and surface measurements.

This second table format shows more specific information on how each

parameter responds across the sampling period at each station. The data from

the low tide and bottom collections were not included as they were not

consistently present across all stations for all samplings.

3.1 Temperature

Water temperatures were consistent with seasonal variations at all stations. The

seasonal patterns can be seen in Figure 10 below. Many stations had dry periods

resulting in data gaps; however, the overall trend was for higher water

temperatures to occur during the summer months and cooler temperatures

during the winter months. The range was about 30°C across the sampling period.

City of Bellingham



Figure 10. Surface sample temperatures at high tide.

Table 1 presents the combined mean values for all water temperature data for

both pre and post culvert conditions. The maximum water temperature

encountered was 31°C at Station 4 in July of 2012. The minimum water

temperature recorded was 0.15°C at Station 6 in January of 2012. The median and

mean water temperatures were slightly lower prior to the culvert removal than

after.

Table 1. Combined Water Temperature data from all Stations pre and post culvert removal*

Project Status Median Temperature

(°C)

Mean Temperature

(°C)

Min Temperature

(°C)

Max Temperature

(°C)

Range

(°C)

Pre culvert 10.59 8.67 1.05 28.23 27.18

Post Culvert 11.82 11.11 0.15 31.18 31.03

* high and low tide, surface and bottom samples

Stations 1, 2, and 6

Table 2 presents water temperature values for Stations 1, 2, and 6 pre and post

culvert replacement. Stations 1 and 2 displayed very similar patterns and

temperature values to each other. The patterns and values were also similar pre

and post culvert removal. Although many low tide events resulted in dry

conditions at these two stations, where present, there was a trend for low tide

conditions to have lower temperatures than high tide conditions.

City of Bellingham



Table 2. Water Temperature data from Stations 1, 2, and 6 pre and post culvert removal*

Station Project Status

Mean Temperature

(°C)

Median Temperature

(°C)

Min Temperature

(°C)

Max Temperature

(°C)

Range

(°C)

1 Pre culvert

12.56 11.87 3.08 22.25 19.17

1 Post Culvert

11.00 9.00 0.19 24.36 24.17

2 Pre culvert

10.56 9.24 2.89 21.90 19.01

2 Post Culvert

11.30 11.98 0.21 25.13 24.92

6 Pre culvert

10.99 9.75 2.99 22.28 19.29

6 Post Culvert

10.19 10.46 0.15 20.31 20.16

* high tide, surface samples only

Station 6 did not experience drying but showed similar trends as Stations 1 and

2. Station 6 experienced the lowest recorded temperatures during the sampling

period. All three stations experienced temperatures near 1°C during a January

event, but most often the winter low temperatures were around 3°C and summer

high temperatures were between 22°C and 25°C. The range between low and

high temperatures was a few degrees higher in the post culvert condition. Other

trends and patterns may not have been detectable due to limited data available

prior to the culvert removal.

Stations 3, 4, 5 and 7

Table 3 presents water temperature values for Stations 3, 4, 5 and 7 pre and post

culvert replacement. Stations 3, 4, 5, and 7 experienced frequent drying events.

No other patterns or trends were detected. This may have been due to the limited

data available prior to the culvert removal.

City of Bellingham



Table 3. Water Temperature data from Stations 3, 4, 5 and 7 pre and post culvert removal*


Mean Temperature

(°C)

Median Temperature

(°C)

Min Temperature

(°C)

Max Temperature

(°C)

Range

(°C)

3 Pre culvert

8.43 6.99 3.44 17.76 14.32

3 Post Culvert

9.89 10.07 4.84 16.31 21.15

4 Pre culvert

12.28 8.52 3.97 21.09 17.12

4 Post Culvert

15.09 11.90 5.72 31.18 25.46

5 Pre culvert

6.37 6.44 2.73 16.50 13.77

5 Pre culvert

11.48 9.10 4.44 23.84 19.40

7 Post Culvert

10.25 8.01 3.71 27.36 23.65

7 Post Culvert

12.59 10.43 4.22 27.79 23.57

*high tide, surface samples only

Stations 8 and 9

Table 4 presents water temperature values for Station 8 and 9 pre and post

culvert replacement. Stations 8 and 9 displayed very similar values to each other

in both low and high tide conditions. Due to the limited data available prior to

the culvert removal, it was not possible to determine changes in patterns or

trends. Table 4. Water Temperature data from Stations8and 9 pre and post culvert removal*


Mean Temperature

(°C)

Median Temperature

(°C)

Min Temperature

(°C)

Max Temperature

(°C)

Range

(°C)

8 Pre culvert

10.20 9.76 1.05 19.19 18.14

8 Post Culvert

13.26 13.48 4.30 23.96 19.66

9 Pre culvert

9.73 8.79 1.63 19.50 17.87

9 Post Culvert

12.29 13.11 3.40 24.10 20.70


3.2 Dissolved Oxygen

Table 5 presents the combined mean values for DO. The maximum DO level

recorded during the sampling period was 21.65 mg/L at Station 4 in March of

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2012 during a minus low tide; conversely the lowest DO level was 0.09 mg/L

recorded at Station 9 in May 2013 which was also a minus low tide. The range

between minimum and maximum DO levels was greater after the culvert was

removed than when present. The mean and median DO levels were similar to

each other and similar in both the pre and post culvert removal conditions. High

DO levels often corresponded with low tide events, particularly at Stations 4 and

8. There was a trend for DO levels to be slightly higher in the Stations associated

with the ditch (Stations 1, 2 and 6) than the others. Table 5. Combined Dissolved Oxygen data from all Stations pre and post culvert removal*


Stations 1, 2, 6

Table 6 presents the DO values for Station 1, 2 and 6 pre and post culvert

replacement. The mean values for DO are very similar, but Stations 1 and 2

display slightly higher median DO levels than observed at Station 6. DO means

and ranges were similar to each other both pre and post culvert removal where

data was present. Table 6. DO data from Stations 1, 2, and 6 pre and post culvert removal*


Mean DO (mg/L)

Median DO (mg/L)

Min DO (mg/L)

Max DO (mg/L)

Range (mg/L)

1 Pre culvert

6.88 7.56 0.13 11.51 11.38

1 Post Culvert

8.72 8.77 2.33 14.92 12.59

2 Pre culvert

8.08 8.11 5.80 11.48 5.68

2 Post Culvert

8.12 8.52 2.62 14.26 11.64

6 Pre culvert

6.08 5.93 0.80 11.28 10.48

6 Post Culvert

5.34 5.46 0.40 10.57 10.17



Table 7 presents the DO values for Station 3, 4, 5 and 7 pre and post culvert

replacement. Station 3 had the lowest mean and median values for DO of all the

stations and also had a very narrow range between minimum and maximum

Project Status

Median DO Mean DO Min DO Max DO Range

Pre culvert 5.57 5.27 0.13 12.52 12.39

Post Culvert 5.80 5.85 0.09 21.65 21.56

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DO. The DO levels were similar in both the pre and post culvert removal

conditions.

The mean and median DO levels were similar between Stations 4, 5 and 7, except

the post removal mean and median DO for Station 4 which is notably higher.

Station 4 had the largest shift in mean and median DO levels between the pre

and post culvert replacement (5.6 mg/L). The other stations experienced minimal

change (approx. 1 mg/L).

Table 7. DO data from Stations 3, 4, 5 and 7 pre and post culvert removal*


Mean DO (mg/L)

Median DO (mg/L)

Min DO (mg/L)

Max DO (mg/L)

Range (mg/L)

3 Pre culvert

2.06 2.05 0.94 4.67 3.73

3 Post Culvert

2.03 1.47 0.42 9.07 8.65

4 Pre culvert

4.94 4.34 0.33 20.55 20.22

4 Post Culvert

10.55 9.72 1.68 21.65 19.97

5 Pre culvert

4.70 3.35 1.41 10.77 9.37

5 Pre culvert

5.09 4.44 0.49 14.18 13.69

7 Post Culvert

6.65 7.45 0.40 12.52 12.12

7 Post Culvert

7.14 7.11 1.12 13.66 12.54

*high tide, surface samples only

Stations 3 and 7 showed no detectable trends. Stations 3 and 7 experienced many

drying events and lacked data associated with low tide events. The data also

showed occasional events of higher DO during low tide events at Stations 4 and

5. We would have expected the inverse situation, with low DO during low tide

events since incoming marine water would be expected to have higher DO levels.

This phenomenon is illustrated in Figure 11 below.

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Figure 11. Dissolved oxygen levels at high and low tides at Station 4.

Stations 8 and 9

Table 8 presents the DO values for Station 8 and 9 pre and post culvert

replacement. Stations 8 and 9 displayed mixed results. In some cases DO was

higher during low tides and with others is higher during high tides (Figure 12).

There may be a correlation to tidal cycles, air temperature, and/or

photosynthesis, but additional sampling and analysis would be required to

discern any such trends. Mean and median DO values did not vary highly

between pre and post culvert conditions. Station 9 presented higher minimum

DO levels in the pre culvert samplings than after or when compared to Station 8. Table 8. DO data from Stations 8 and 9 pre and post culvert removal*


Mean DO (mg/L)

Median DO (mg/L)

Min DO (mg/L)

Max DO (mg/L)

Range (mg/L)

8 Pre culvert

3.25 3.03 0.40 8.94 8.54

8 Post Culvert

3.36 2.63 0.13 17.44 17.31

9 Pre culvert

5.91 4.81 1.00 12.03 11.03

9 Post Culvert

4.86 4.21 0.24 11.12 10.88


Figure 12. Dissolved oxygen levels at different tidal elevations at Station 8.

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3.3 Salinity and Specific Conductance

Salinity and Specific Conductance have been reported together as conductivity

is used to measure salinity and results were very similar. Table 9 presents the

combined mean values for salinity.

Table 9. Combined Salinity data from all Stations pre and post culvert removal*


Salinity within the sampling area ranged from a maximum value of 32.87 PSS at

Station 6 on a high tide in August 2010 to a low value of 0.12 PSS on May 11,

2010 on a low tide. The median salinity pre culvert replacement was 2.68 PSS

verses 4.14 PSS after the replacement. The mean also shifted with the culvert

replacement with the pre-replacement mean salinity at 6.63 PSS and after the

replacement it was 8.27 PSS. SpC values followed similar trends.

Stations 1, 2, 6

Table 10 presents the salinity values for Station 1, 2 and 6 pre and post culvert

replacement. Stations 1 and 2 tended to have the highest salinity readings.

Stations 1 and 2 displayed similar wide variations between low and high tide.

The range may have increased slightly after removal of the culvert but we could

not detect if this is significant. In comparison with Stations 1 and2, Stations 6

displayed more steady values between high and low tide events.

No clear differences were detected, but there may be a slight decrease in salinity

at Station 6 after the culvert removal. This may be explained if heavier

precipitation occurred during post event monitoring years.

Project Status Median Salinity (PSS)

Mean Salinity (PSS)

Min Salinity (PSS)

Max Salinity (PSS)

Range (PSS)

Pre culvert 2.68 6.63 0.12 32.87 32.75

Post Culvert 4.15 8.27 0.12 29.24 29.12

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Table 10. Salinity data from Stations 1, 2, and 6 pre and post culvert removal*


Mean Salinity (PSS)

Median Salinity

(PSS)

Min Salinity (PSS)

Max Salinity (PSS)

Range (PSS)

1 Pre culvert

7.23 3.21 0.13 11.51 11.38

1 Post Culvert

10.18 4.16 2.33 14.93 12.60

2 Pre culvert

5.54 0.69 0.25 26.86 0.25

2 Post Culvert

10.16 20.19 0.23 29.16 28.93

6 Pre culvert

3.28 0.36 0.12 20.48 20.36

6 Post Culvert

2.47 0.44 0.12 18.99 18.87



Table 11 presents the salinity values for Station 3, 4, 5 and 7 pre and post culvert

replacement. Stations 3, 4, 5 and 7 all have inconsistent data and trends were not

discernible. Station 7 displayed the lowest salinity values of this guild prior to

the culvert removal; this trend continued post culvert removal. However, the

range between minimum and maximum salinity values changed substantially

post culvert removal. Station 7 had very similar mean and maximum salinity

values to Station 6. There may be underlying correlations with tides, but it is

difficult to detect.

Table 11. Salinity data from Stations 3, 4, 5 and 7 pre and post culvert removal*


Mean Salinity (PSS)

Median Salinity

(PSS)

Min Salinity (PSS)

Max Salinity (PSS)

Range (PSS)

3 Pre culvert

7.14 5.25 3.67 14.24 10.57

3 Post Culvert

8.40 7.61 1.91 21.77 19.86

4 Pre culvert

9.69 9.65 1.11 22.85 21.74

4 Post Culvert

12.55 12.01 2.55 27.82 25.27

5 Pre culvert

5.33 5.4 0.90 14.18 13.83

5 Pre culvert

6.95 4.51 0.35 22.60 22.25

7 Post Culvert

2.18 2.41 0.65 2.91 2.26

7 Post Culvert

4.68 2.93 0.48 18.79 18.31


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Stations 8 and 9

Table 12 presents the salinity values for Station 8 and 9 pre and post culvert

replacement. Stations 8 and 9 also have a number of data gaps. Station 9 has

lower mean and median salinity values than Station 8 both pre and post culvert

removal. The range of salinity values is greater at Station 8 than observed at 9.

Table 12. Water DO data from Stations 8 and 9 pre and post culvert removal*


Mean Salinity (PSS)

Median Salinity

(PSS)

Min Salinity (PSS)

Max Salinity (PSS)

Range (PSS)

8 Pre culvert

5.12 2.60 0.47 17.60 17.13

8 Post Culvert

5.08 2.56 0.23 23.54 23.31

9 Pre culvert

2.20 0.93 0.14 8.67 8.53

9 Post Culvert

2.81 1.47 0.18 12.03 11.85


4.0 Discussion

4.1 Water Quality Parameters

Water quality parameters were sampled within the marsh over a three year

period, documenting conditions pre and post culvert removal. No obvious effects

to the water temperatures, DO, salinity or specific conductivity were observed as

the result of the culvert removal. If present, the effects may not be apparent due

to the limited sampling period and frequent data gaps. Although the data appear

to exhibit minor differences for specific parameters, the differences may be

associated with natural variability including air temperature and precipitation.

Nevertheless, the minor changes observed included a slight increase in the range

between minimum and maximum DO levels after the culvert was removed. This

may be the result of freshwater influence.

Dissolved oxygen levels appear to be correlated with tide cycles, but opposite as

might be expected in some cases. The highest DO readings corresponded with

low tide events at several stations, as illustrated for Station 4 in Figure 13 below.

It was expected that high tide events would result in a flush of additional water

inputs and higher DO levels, but this was not always the case. The shift in DO

levels could be attributed to differences in temperatures, tide cycles,

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photosynthesis, and timing of sampling between different years and would

require further analysis and/or sampling.

Figure 13. Dissolved oxygen levels at different tidal elevations at Station 4.

The tidal influence within the marsh appears not to have changed significantly.

The only notable exception was near Stations 1 and 2. These stations experienced

changes in the number of days without water. Both stations had dry periods at

high tide prior to the culvert removal and experience none after the removal.

Both pre and post culvert replacement, the tidal influence appears to extend

throughout the marsh, but the strongest affects were observed within the main

drainage ditch at Stations 1, 2, and 6. These stations displayed the closest

correlation between water quality parameters and tidal cycles. Figure 14

illustrates how the salinity tends to be higher at high tide than low tide at Station

2. This trend follows at all three stations. Station 2 is nearest to the marine

system; whereas Station 6 is farther from the inlet and shows reduced amplitude

between high tide and low tide as seen in Figure 15. Also note, Station 2

experiences higher peaks in salinity values compared to Station 6 (Figure 14).

Figure 14. Salinity levels at Station 2.

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Figure 15. Salinity levels at Station 6.

Figure 16. Comparing salinity levels at Stations 2 and 6, high tide surface samples only.

Salinity levels tended to be lower at stations further from the outlet and further

from the primary ditch as illustrated in Figure 16. This is consistent with the

characterization study conducted in the marsh in 2008 (NES 2008).

Station 6 appears to have the greatest freshwater input through the drainage

flowing from the north. During winter months with high precipitation, lower

salinity levels were noted at most Stations (except 1 and 2). During winter and

early spring months the data indicates good mixing of fresh and salt waters and

little stratification in the main ditch. When precipitation rates drop, a layer of

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freshwater is observable above the denser salt water at Station 6 as illustrated in

Figure 17.

Figure 17. Salinity stratification at Station 6.

Figure 18. Salinity stratification at Station 8.

Stratification was observed at the three stations where there was sufficient water

to allow for this behavior. Both Stations 6 and 8 developed a freshwater layer

over a denser salt layer during some conditions (Figures 17 and 18). This is

consistent with the observations prior to the culvert removal and likely has

important functions within the marsh for some organisms such as pacific chorus

frog (Pseudacris regilla) (NES 2008). The marsh continues to have a similar salinity

gradient post culvert removal as it did prior to the culvert removal.

Note: water sampling was only conducted on days when tides of seven feet or greater

occurred and therefore only days when marine water mixed within the marsh are

represented. Water quality parameters may differ on days where marine inputs are not

present.

City of Bellingham



4.2 Conclusions

The culvert removal appears to have established a more regular connection

between the primary north/south ditch and the marine environment. The ditch is

influenced by freshwater inputs entering from the north and the marine tidal

influence from the south. Tidal influence changes beyond the primary ditch are

not clear from the available data. Prior to the culvert removal, data at the

sampling stations were scattered and patterns are difficult to detect due to the

limited sampling period and frequent dry periods. The data suggests that Station

3 is primarily influenced by freshwater flowing in the ditch from the east.

Stations 4, 5, 7, 8 and 9 interface with marine events, but not on a regular basis.

Station 1, 2 and 6 have a more consistent connection with the marine system, but

also are influenced by freshwater moving through the system.

Chuckanut Village Marsh appears to continue to provide high functioning

estuarine wetland habitat. The data indicates that since the culvert was removed

the water quality parameters are functioning in a similar manner as before the

culvert was removed. Increased tidal action is present near the outlet of the

marsh with evidence of occasional large marine inputs as evidenced by

photographs of marine algae drift in the interior of the marsh.

5.0 Fish Presence Chuckanut Village Marsh is an estuarine wetland and has been considered

potential rearing habitat for juvenile salmonids. The 2011 culvert removal project

had the potential to change fish access and fish habitat conditions within the

marsh.

5.1 Fish Access

Two prior studies documented fish presence within the larger Chuckanut Bay

drainage basin and in the vicinity of Chuckanut Village Marsh prior to the 2011

Chuckanut Village Marsh culvert removal project. The City of Bellingham’s

study consisted of spawner surveys on Chuckanut Creek from 2001 through 2006

(LaCroix personal communication 2013). These surveys documented the

presence of adult chum (Oncorhynchus keta), coho (O. kisutch), Chinook (O.

tshawytscha), steelhead (O. mykiss), and cutthroat trout (O. clarki clarki). Of all the

species observed, Chinook salmon is the only species not known to spawn in

Chuckanut Creek. The adult Chinook salmon sampled in the survey appeared

without a mate and did not appear to be associated with a red; therefore, were

believed to be strays and not evidence of spawning.

City of Bellingham



The Lummi Natural Resources Department’s study consisted of beach seining

surveys in Chuckanut Bay from 2005 through 2007. They captured juvenile

Chinook, chum, and coho salmon. Since Chinook are not known to spawn in

Chuckanut Creek, they were assumed to be migrating through Chuckanut Bay

from their native stream system (MacKay personal communication 2008).

In addition to the two studies mentioned above, the Whatcom County Marine

Resource Committee (MRC) collected data on fish presence immediately prior

and immediately following culvert removal. The MRC conducted this

independent survey from 2010 through 2012. Their data was collected within

Chuckanut Bay and also within Chuckanut Village Marsh from March through

June of each survey year.

Figure 19. Sorting specimens during seining surveys.

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Figure 20. Chinook salmon smolt from beach seine in Chuckanut Bay.

Data results from the MRC seining survey is summarized in Table 13, below. Table 13. MRC seining survey results

Date Sample

Location

Total fish caught before and after culvert replacement

Chinook Chum Coho Staghorn sculpin

Sculpin unid.

3-spine Stickleback

Shiner perch

Starry flounder

2010 Chuckanut Bay 4 210 0 422 363 20 31 4

n=8 Salt Marsh 0 0 1 2 1 111 0 0

2011 Chuckanut Bay 11 488 0 26 460 12 1 2

n=7 Salt Marsh 4 0 150 0 0 300 0 0

2012 Chuckanut Bay* 4 11 15 10 427 13 18 2

n=7 Salt Marsh 0 0 43 0 2 163 0 0

*6 pink salmon were captured in Chuckanut Bay in 2012

In 2010, prior to the culvert project, the MRC only observed one individual

salmonid in the marsh. In 2011, the spring and summer following culvert

removal, they observed 154 salmonids including four Chinook. In 2012 they

observed 43 salmonids. In both years, coho were the most prevalent species.

Although of limited duration, these results appear to suggest greater fish access

to the marsh after culvert removal.

City of Bellingham



5.2 Fish Habitat Conditions

The City of Bellingham’s Chuckanut Village Marsh water quality monitoring

data can be used to assess changes in the quality of fish habitat in the marsh

resulting from the 2011 culvert removal project. For this report, Station 6 is the

only station evaluated for fish habitat conditions. Station 6 and the immediate

vicinity are the only areas that provide the water depth, duration, and

connectivity to support prolonged juvenile fish presence and rearing. This report

also uses water quality thresholds from the WRIA 1 limiting factors report (Smith

2002). Although the thresholds are used in the context of freshwater streams and

may not translate entirely for the estuarine Chuckanut Village Marsh site, they

provide some guidance on general fish habitat parameters.

Using the WRIA 1 thresholds, the temperature at Station 6 primarily stayed

within the "good" and "fair" ranges (Figure 21). Station 6 occasionally qualified as

"poor" and never reached "lethal" temperatures. Although the temperature only

reached the "poor" threshold occasionally, the events occurred in early summer

both pre and post culvert removal, during the anticipated time when fish might

be rearing within the marsh. Based on this limited sampling period, Station 6

does not appear to have experienced an obvious change in temperature

conditions after culvert installation.

Figure 21. Temperatures and WRIA salmonid thresholds (Smith, 2002).

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Station 6 also experienced periods of "poor" DO levels during the anticipated

rearing window (Figure 22). Station 6 does not appear to have experienced an

obvious change after culvert installation and appears to maintain annual periods

of "poor" DO conditions during the anticipated rearing window. However, this

observation is based on a limited sampling period.

The culvert removal project had additional benefits for fish habitat. Other project

related habitat benefits included the removal of vehicles from the beach, the

reestablishment of native vegetation in the previous parking area, and increased

community stewardship education.

Figure 22. Dissolved oxygen levels and WRIA salmonid thresholds (Smith, 2002)

5.3 Conclusions

Based on the water quality sampling results, the most influential change to fish

habitat resulting from the culvert removal project appears to be improved access

to rearing habitat for juvenile salmon. Other project related habitat benefits

included the removal of vehicles from the beach, the reestablishment of native

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vegetation in the previous parking area, and increased community stewardship

education.

6.0 Recommendations The data collected to date provide a representative picture of the pre and post

project conditions of standard water quality parameters in the Chuckanut Village

Marsh system. If sampling continues, we recommend collecting the following

additional data to provide a greater understanding of the interaction of the

marsh and the marine system:

1. Continue seining surveys in the bay and within the marsh.

2. Monitor vegetation communities within the marsh five years after the

culvert removal to detect any change.

3. Monitor beach improvements such as vegetation re-establishment.

City of Bellingham




Appendix A: References

References Allan, J.D. 1995. Stream Ecology: Structure and Function of Running Waters.

Chapman & Hall, New York. 400 pgs.

Bellingham, City of. 2010. Chuckanut Village Marsh Water Quality Improvement,

Quality Assurance Project Plan, Revised March 2010. Department of Public

Works, Bellingham, Washington. 28 pgs. [cited in text as COB 2010]

Coastal Geologic Services, Inc. 2007. Whatcom County Nearshore Habitat Restoration

Prioritization. Bellingham, Washington. 36 pgs.

LaCroix, R. 2013. Ecology and Restoration Manager, City of Bellingham Public

Works Department. Personal communication with Analiese Burns 18 July

2013.

MacKay, M. 2008. Senior Biologist, Lummi Nation Natural Resources

Department. Personal communication with Analiese Burns. 9 December

2008.

Northwest Ecological Services, LLC. 2006. Management Recommendations for City

of Bellingham Pocket Estuaries. Bellingham, Washington. 36 pgs. [cited in text

as NES 2006]

Northwest Ecological Services, LLC. 2008. Wetland Characterization: Chuckanut

Village Marsh. Bellingham, WA. 78 pgs. [cited in text as NES 2008]

Smith, C.J. 2002. Salmon and Steelhead Habitat Limiting Factors in WRIA 1, the

Nooksack Basin. Washington State Conservation Commission. Lacey,

Washington. 325 pgs.

Washington State Department of Ecology. 2010. DRAFT Standard Operating

Procedures to Minimize the Spread of Invasive Species from Areas of Moderate

1

Concern. Environmental Assessment Program. Olympia, Washington. 28

pgs.

2

Appendix B: Water Quality Raw Data

Chuckanut Village Marsh - Water Quality Sampling Data

Raw Data, April 2010 - June 2013

Legendcirculator broken, therefore all data and checks performed without circulator. All DO data flagged for this data and omitted from EIM.

Omitted readings, pH recorded instead of PSS.

DO fluxuating. Slowly drifting up to 19.0 then down to 15.0 as water mixed.

Improbably low specific conductance and salinity, flagged and omitted.

149% of RPD, flag.

Warmer at surface, double checked in field.

Low DO at bottom in flocculating sediment/algae. Double checked to ensure accurate reading.

Raw DataDate Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)

04/15/10 Low -0.94 1 Surface 10.68 3.18 7.72 1.64

04/15/10 Low -0.94 1 Bottom 10.64 3.30 7.36 1.68

04/15/10 Low -0.94 2 Surface 10.51 2.90 7.58 1.48

04/15/10 Low -0.94 3 Surface 12.88 23.60 2.20 14.24

04/15/10 Low -0.94 4 Surface 19.13 17.90 2.88 10.74

04/15/10 Low -0.94 6 Surface 9.66 0.53 6.26 0.25

04/15/10 Low -0.94 6 Bottom 10.68 14.50 1.42 8.19

04/15/10 Low -0.94 7 Surface 15.74 5.44 1.27 2.68

04/15/10 Low -0.94 8 Surface 14.06 3.29 1.85 0.96

04/15/10 Low -0.94 8 Bottom 17.10 16.30 1.11 9.08

04/15/10 Low -0.94 9 Surface 13.13 2.46 6.13 1.31

04/15/10 High 7.76 1 Surface 12.10 41.90 9.28 26.38

04/15/10 High 7.76 1 Bottom 12.05 43.00 9.14 27.07

04/15/10 High 7.76 2 Surface 10.35 4.05 8.31 2.07

04/15/10 High 7.76 3 Surface 10.85 22.90 2.14 13.23

04/15/10 High 7.76 4 Surface 20.97 23.50 6.63 14.01

04/15/10 High 7.76 6 Surface 9.83 0.67 5.60 0.33

04/15/10 High 7.76 6 Bottom 10.43 12.99 1.45 7.36

04/15/10 High 7.76 7 Surface 11.84 5.10 2.35 2.91

04/15/10 High 7.76 8 Surface 15.53 10.32 5.24 5.64

04/15/10 High 7.76 8 Bottom 16.79 16.10 1.50 9.19

04/15/10 High 7.76 9 Surface 12.42 3.08 4.03 1.52

06/14/10 Low -3.23 1 Surface 16.46 1.81 7.40 0.92

06/14/10 Low -3.23 1 Bottom 16.36 2.32 6.74 1.12

06/14/10 Low -3.23 2 Surface 16.20 1.65 7.25 0.83

06/14/10 Low -3.23 3 Surface 17.76 7.32 1.96 3.67

06/14/10 Low -3.23 4 Surface 28.23 11.62 0.92 6.68

06/14/10 Low -3.23 6 Surface 12.66 0.49 4.20 0.22

06/14/10 Low -3.23 6 Bottom 13.59 7.63 0.53 3.98

06/14/10 Low -3.23 7 Surface 27.36 4.49 7.48 2.41

06/14/10 Low -3.23 8 Surface 20.04 0.86 3.55 0.42

06/14/10 Low -3.23 8 Bottom 16.33 2.57 1.42 1.31

06/14/10 Low -3.23 9 Surface 19.50 1.28 7.95 0.64

06/14/10 High 9.10 1 Surface 16.87 23.20 6.59 14.72

06/14/10 High 9.10 1 Bottom 17.96 37.90 5.99 23.85

06/14/10 High 9.10 2 Surface 16.64 18.40 5.80 11.73

06/14/10 High 9.10 2 Bottom 17.47 24.20 5.78 14.53

06/14/10 High 9.10 3 Surface 14.77 9.49 1.13 5.22

06/14/10 High 9.10 4 Surface 25.41 17.60 0.33 10.37

06/14/10 High 9.10 6 Surface 12.73 0.80 2.60 0.39

06/14/10 High 9.10 6 Bottom 13.50 7.66 1.04 4.18

06/14/10 High 9.10 7 Surface 18.07 5.13 0.40 2.73

06/14/10 High 9.10 8 Surface 18.98 1.26 2.98 0.60

06/14/10 High 9.10 8 Bottom 19.19 3.45 1.28 1.79

06/14/10 High 9.10 9 Surface 18.68 1.84 3.96 0.93

07/14/10 Low -1.94 1 Surface 18.51 13.53 6.26 7.73

1 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)07/14/10 Low -1.94 6 Surface 19.47 34.70 6.37 18.23

07/14/10 Low -1.94 6 Bottom 19.54 36.40 6.61 22.74

07/14/10 High 9.16 1 Surface 21.96 33.30 6.46 20.74

07/14/10 High 9.16 1 Bottom 21.66 33.60 6.41 20.94

07/14/10 High 9.16 2 Surface 21.90 33.50 6.61 20.88

07/14/10 High 9.16 2 Bottom 21.87 33.60 6.49 20.88

07/14/10 High 9.16 6 Surface 22.28 32.60 3.34 20.48

07/14/10 High 9.16 6 Bottom 20.24 36.30 4.13 22.83

08/25/10 Low 0.80 1 Surface 20.26 42.30 0.13 26.96

08/25/10 Low 0.80 6 Surface 16.80 13.61 3.20 7.78

08/25/10 High 7.90 1 Surface 22.25 49.90 0.31 32.51

08/25/10 High 7.90 1 Bottom 22.23 50.40 0.22 32.87

08/25/10 High 7.90 6 Surface 20.45 13.54 5.55 7.76

09/07/10 Low -0.60 1 Surface 13.71 2.69 4.71 1.38

09/07/10 Low -0.60 1 Bottom 14.55 27.80 0.37 16.84

09/07/10 Low -0.60 6 Surface 13.34 1.30 3.61 0.64

09/07/10 Low -0.60 6 Bottom 13.47 3.26 2.23 1.69

09/07/10 Low -0.60 8 Surface 14.10 7.14 4.46 3.88

09/07/10 Low -0.60 8 Bottom 14.13 7.15 3.97 3.88

09/07/10 Low -0.60 9 Surface 14.15 15.10 2.90 8.67

09/07/10 Low -0.60 9 Bottom 15.19 19.20 4.90 11.26

09/07/10 High 8.30 1 Surface 16.40 42.90 5.10 27.21

09/07/10 High 8.30 1 Bottom 16.33 43.00 4.69 27.28

09/07/10 High 8.30 2 Surface 16.34 42.40 6.00 26.86

09/07/10 High 8.30 6 Surface 13.72 1.58 2.57 0.79

09/07/10 High 8.30 6 Bottom 13.97 6.23 1.49 3.35

09/07/10 High 8.30 8 Surface 14.17 6.06 3.27 3.26

09/07/10 High 8.30 8 Bottom 14.47 6.77 5.59 3.67

09/07/10 High 8.30 9 Surface 14.75 11.11 3.23 6.23

09/07/10 High 8.30 9 Bottom 15.42 17.70 6.20 10.31

10/20/10 Low 3.50 1 Surface 8.20 2.71 4.29 1.38

10/20/10 Low 3.50 1 Bottom 8.96 4.40 1.04 2.31

10/20/10 Low 3.50 6 Surface 8.78 0.87 1.21 0.42

10/20/10 Low 3.50 6 Bottom 8.79 1.18 0.93 0.58

10/20/10 Low 3.50 8 Surface 8.00 1.68 3.17 0.84

10/20/10 Low 3.50 8 Bottom 8.48 4.28 0.99 2.24

10/20/10 Low 3.50 9 Surface 8.90 4.92 1.00 2.59

10/20/10 Low 3.50 9 Bottom 11.16 15.40 0.22 8.82

10/20/10 High 7.80 1 Surface 11.64 2.68 3.88 1.37

10/20/10 High 7.80 1 Bottom 11.64 6.08 2.41 3.26

10/20/10 High 7.80 6 Surface 10.52 0.93 0.80 0.45

10/20/10 High 7.80 6 Bottom 10.49 0.98 0.56 0.48

10/20/10 High 7.80 8 Surface 11.15 2.12 2.73 1.07

10/20/10 High 7.80 8 Bottom 10.19 4.03 0.62 2.10

10/20/10 High 7.80 9 Surface 10.65 2.58 2.22 1.31

10/20/10 High 7.80 9 Bottom 11.17 15.10 0.21 8.64

11/29/10 Low 2.90 1 Surface 8.40 0.00 10.37 0.00

11/29/10 Low 2.90 2 Surface 3.82 1.16 8.94 0.56

11/29/10 Low 2.90 3 Surface 4.50 0.30 3.27 0.14

11/29/10 Low 2.90 4 Surface 5.20 0.00 11.17 0.00

11/29/10 Low 2.90 5 Surface 5.39 0.00 4.20 0.00

11/29/10 Low 2.90 6 Surface 5.70 0.00 11.18 0.00

11/29/10 Low 2.90 6 Bottom 5.49 0.00 8.14 0.00

11/29/10 Low 2.90 7 Surface 5.34 0.00 10.89 0.00

11/29/10 Low 2.90 8 Surface 5.08 0.00 11.93 0.00

11/29/10 Low 2.90 8 Bottom 3.81 4.66 2.00 2.44

11/29/10 Low 2.90 9 Surface 4.54 0.00 11.02 0.00

11/29/10 Low 2.90 9 Bottom 4.43 0.00 5.05 0.00

11/29/10 High 9.10 1 Surface 16.36 0.00 8.77 0.01

11/29/10 High 9.10 1 Bottom 15.87 0.00 7.18 0.01

11/29/10 High 9.10 2 Surface 14.97 0.00 6.30 0.01

11/29/10 High 9.10 2 Bottom 12.92 0.00 7.06 0.01

11/29/10 High 9.10 3 Surface 4.98 21.10 2.33 12.28

11/29/10 High 9.10 4 Surface 7.58 0.00 9.73 0.00

11/29/10 High 9.10 5 Surface 6.01 0.00 8.11 0.00

2 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)

11/29/10 High 9.10 6 Surface 6.61 0.00 11.28 0.00

11/29/10 High 9.10 6 Bottom 3.44 0.38 8.46 0.18

11/29/10 High 9.10 7 Surface 4.21 0.01 12.52 0.01

11/29/10 High 9.10 8 Surface 1.05 0.00 5.93 0.00

11/29/10 High 9.10 8 Bottom 2.73 3.47 3.84 1.78

11/29/10 High 9.10 9 Surface 2.07 0.00 12.03 0.00

12/13/10 Low 3.20 1 Surface 8.03 1.11 8.32 0.54

12/13/10 Low 3.20 1 Bottom 8.02 1.11 8.11 0.53

12/13/10 Low 3.20 2 Surface 8.01 1.06 8.09 0.52

12/13/10 Low 3.20 3 Surface 7.43 46.30 2.19 9.33

12/13/10 Low 3.20 4 Surface 9.12 26.50 8.04 15.84

12/13/10 Low 3.20 5 Surface 8.15 17.10 2.33 9.84

12/13/10 Low 3.20 6 Surface 8.02 0.40 7.94 0.19

12/13/10 Low 3.20 6 Bottom 8.02 0.46 7.95 0.21

12/13/10 Low 3.20 7 Surface 8.02 2.08 8.98 1.05

12/13/10 Low 3.20 8 Surface 8.37 1.14 3.11 0.56

12/13/10 Low 3.20 8 Bottom 8.36 16.10 0.32 9.22

12/13/10 Low 3.20 9 Surface 8.43 0.37 4.23 0.17

12/13/10 Low 3.20 9 Bottom 8.45 1.11 2.32 0.54

12/13/10 High 8.70 1 Surface 8.04 0.51 8.46 0.24

12/13/10 High 8.70 1 Bottom 8.21 30.50 5.82 18.43

12/13/10 High 8.70 2 Surface 8.12 0.53 8.12 0.25

12/13/10 High 8.70 2 Bottom 8.14 0.53 7.82 0.25

12/13/10 High 8.70 3 Surface 7.91 9.58 4.67 5.27

12/13/10 High 8.70 4 Surface 8.37 2.21 3.57 1.11

12/13/10 High 8.70 4 Bottom 8.52 37.10 1.42 22.85

12/13/10 High 8.70 5 Surface 8.61 1.80 6.43 0.90

12/13/10 High 8.70 6 Surface 8.36 0.25 8.12 0.12

12/13/10 High 8.70 6 Bottom 8.37 0.32 8.02 0.15

12/13/10 High 8.70 7 Surface 8.73 1.33 7.42 0.65

12/13/10 High 8.70 7 Bottom 8.84 1.10 5.82 0.54

12/13/10 High 8.70 8 Surface 9.33 0.97 4.97 0.47

12/13/10 High 8.70 8 Bottom 8.31 16.20 0.40 9.28

12/13/10 High 8.70 9 Surface 8.79 0.30 6.11 0.14

12/13/10 High 8.70 9 Bottom 8.45 4.52 0.62 2.37

01/26/11 Low 0.70 1 Surface 7.50 0.95 8.59 0.46

01/26/11 Low 0.70 1 Bottom 7.48 0.95 8.67 0.46

01/26/11 Low 0.70 2 Surface 7.43 0.90 8.59 0.44

01/26/11 Low 0.70 3 Surface 6.47 9.49 1.09 5.21

01/26/11 Low 0.70 4 Surface 9.86 10.33 4.34 5.73

01/26/11 Low 0.70 5 Surface 8.37 6.04 10.77 3.22

01/26/11 Low 0.70 6 Surface 7.27 0.60 8.42 0.28

01/26/11 Low 0.70 6 Bottom 7.27 0.43 8.51 0.20

01/26/11 Low 0.70 7 Surface 7.99 4.08 9.93 2.13

01/26/11 Low 0.70 8 Surface 8.39 1.11 7.39 0.54

01/26/11 Low 0.70 8 Bottom 7.87 31.70 1.86 19.21

01/26/11 Low 0.70 9 Surface 7.65 0.59 7.20 6.28

01/26/11 Low 0.70 9 Bottom 8.37 36.70 1.02 22.58

01/26/11 High 9.40 1 Surface 6.75 0.88 8.81 0.42

01/26/11 High 9.40 1 Bottom 7.38 43.40 7.52 27.09

01/26/11 High 9.40 2 Surface 6.74 0.77 8.69 0.37

01/26/11 High 9.40 2 Bottom 6.73 0.81 8.64 0.38

01/26/11 High 9.40 3 Surface 6.54 8.92 1.39 4.88

01/26/11 High 9.40 4 Surface 7.43 16.80 1.59 9.65

01/26/11 High 9.40 5 Surface 6.87 7.88 1.88 4.27

01/26/11 High 9.40 6 Surface 6.81 0.37 8.58 0.17

01/26/11 High 9.40 6 Bottom 6.78 0.54 8.57 0.26

01/26/11 High 9.40 7 Surface 6.88 3.80 4.94 1.97

01/26/11 High 9.40 8 Surface 7.18 4.93 3.08 2.60

01/26/11 High 9.40 8 Bottom 7.24 28.60 0.74 17.15

01/26/11 High 9.40 9 Surface 7.10 0.52 4.81 0.25

01/26/11 High 9.40 9 Bottom 7.64 34.40 0.53 21.00

02/11/11 Low 1.00 1 Surface 3.93 1.14 11.51 0.56

02/11/11 Low 1.00 2 Surface 3.91 1.13 11.34 0.55

02/11/11 Low 1.00 3 Surface 3.65 9.82 0.94 5.38

02/11/11 Low 1.00 4 Surface 5.89 10.53 6.90 5.82

02/11/11 Low 1.00 5 Surface 4.83 12.84 2.50 7.19

3 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)02/11/11 Low 1.00 6 Surface 3.89 0.55 10.16 0.26

02/11/11 Low 1.00 6 Bottom 3.87 0.60 10.09 0.28

02/11/11 Low 1.00 7 Surface 5.10 4.59 5.96 2.40

02/11/11 Low 1.00 8 Surface 3.94 1.21 10.72 0.59

02/11/11 Low 1.00 8 Bottom 5.01 28.80 1.03 17.21

02/11/11 Low 1.00 9 Surface 3.26 0.90 10.65 0.43

02/11/11 Low 1.00 9 Bottom 5.53 30.20 6.31 18.14

02/11/11 High 8.20 1 Surface 3.08 8.77 10.70 4.77

02/11/11 High 8.20 1 Bottom 3.12 10.65 10.20 5.87

02/11/11 High 8.20 2 Surface 2.89 1.11 11.48 0.54

02/11/11 High 8.20 3 Surface 3.44 9.14 1.44 4.98

02/11/11 High 8.20 4 Surface 3.97 6.97 6.66 3.74

02/11/11 High 8.20 5 Surface 2.73 11.78 1.41 6.53

02/11/11 High 8.20 6 Surface 2.99 0.55 10.62 0.26

02/11/11 High 8.20 6 Bottom 2.98 0.60 10.63 0.28

02/11/11 High 8.20 7 Surface 3.71 5.40 7.71 2.85

02/11/11 High 8.20 8 Surface 1.84 1.14 8.94 0.55

02/11/11 High 8.20 8 Bottom 5.06 29.40 0.96 17.60

02/11/11 High 8.20 9 Surface 1.63 0.71 7.04 0.34

02/11/11 High 8.20 9 Bottom 5.23 28.20 8.15 16.83

PROJECT CONSTRUCTED, NEW BOX CULVERT INSTALLED03/25/11 Low -0.40 2 Surface 9.26 1.85 9.24 0.93

03/25/11 Low -0.40 3 Surface 10.84 20.10 3.41 11.76

03/25/11 Low -0.40 4 Surface 18.06 20.30 14.60 12.01

03/25/11 Low -0.40 5 Surface 16.50 23.70 7.44 14.18

03/25/11 Low -0.40 6 Surface 9.24 3.18 6.86 1.63

03/25/11 Low -0.40 6 Bottom 9.94 27.00 6.28 16.19

03/25/11 Low -0.40 7 Surface 16.52 7.22 6.71 3.93

03/25/11 Low -0.40 8 Surface 12.02 6.87 6.02 3.71

03/25/11 Low -0.40 8 Bottom 12.13 16.90 2.28 9.77

03/25/11 Low -0.40 9 Surface 10.86 2.14 3.10 1.08

03/25/11 Low -0.40 9 Bottom 12.06 13.64 0.25 7.75

03/25/11 High 8.00 1 Surface 6.46 10.23 8.86 5.65

03/25/11 High 8.00 1 Bottom 7.21 43.60 9.12 27.22

03/25/11 High 8.00 2 Surface 7.17 43.30 8.86 17.47

03/25/11 High 8.00 2 Bottom 7.18 43.40 8.84 27.08

03/25/11 High 8.00 3 Surface 6.52 20.00 0.98 11.62

03/25/11 High 8.00 4 Surface 10.79 20.20 3.71 11.83

03/25/11 High 8.00 5 Surface 7.26 23.40 0.49 13.79

03/25/11 High 8.00 6 Surface 6.54 5.99 6.44 3.19

03/25/11 High 8.00 6 Bottom 7.22 33.30 3.40 20.25

03/25/11 High 8.00 7 Surface 8.50 6.26 2.37 3.35

03/25/11 High 8.00 8 Surface 7.14 2.71 3.64 1.38

03/25/11 High 8.00 8 Bottom 9.62 15.20 0.51 8.68

03/25/11 High 8.00 9 Surface 8.09 3.21 3.43 1.65

03/25/11 High 8.00 9 Bottom 10.38 16.40 0.15 9.43

04/18/11 Low -1.60 1 Surface 7.15 0.68 11.60 0.32

04/18/11 Low -1.60 2 Surface 7.06 0.65 11.60 0.31

04/18/11 Low -1.60 3 Surface 10.15 8.97 2.12 4.93

04/18/11 Low -1.60 4 Surface 13.30 4.82 3.80 2.55

04/18/11 Low -1.60 5 Surface 12.42 4.43 2.85 2.33

04/18/11 Low -1.60 6 Surface 6.90 0.38 10.22 0.18

04/18/11 Low -1.60 6 Bottom 7.05 0.45 9.84 0.21

04/18/11 Low -1.60 7 Surface 12.36 1.23 8.01 0.60

04/18/11 Low -1.60 8 Surface 9.57 2.60 3.25 1.32

04/18/11 Low -1.60 8 Bottom 10.96 10.64 1.46 5.92

04/18/11 Low -1.60 9 Surface 7.88 0.69 9.43 0.33

04/18/11 Low -1.60 9 Bottom 13.04 20.70 17.39 12.18

04/18/11 High 8.60 1 Surface 11.17 10.99 14.19 6.14

04/18/11 High 8.60 1 Bottom 11.96 43.70 13.20 27.55

04/18/11 High 8.60 2 Surface 11.98 42.40 12.87 26.65

04/18/11 High 8.60 2 Bottom 11.67 43.00 13.11 27.05

04/18/11 High 8.60 3 Surface 8.48 8.58 2.54 4.69

04/18/11 High 8.60 4 Surface 21.09 9.67 8.94 5.41

04/18/11 High 8.60 5 Surface 16.84 5.26 11.05 2.81

04/18/11 High 8.60 6 Surface 8.23 0.38 8.23 0.18

04/18/11 High 8.60 6 Bottom 8.25 0.43 7.72 0.20

04/18/11 High 8.60 7 Surface 13.14 1.12 8.06 0.55

4 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)04/18/11 High 8.60 8 Surface 13.72 0.72 7.25 0.35

04/18/11 High 8.60 8 Bottom 13.24 13.11 1.57 7.44

04/18/11 High 8.60 9 Surface 11.10 0.93 10.53 0.45

04/18/11 High 8.60 9 Bottom 13.74 22.30 9.69 13.22

05/16/11 Low -2.20 1 Surface 9.80 0.49 9.76 0.23

05/16/11 Low -2.20 2 Surface 9.82 0.49 8.66 0.23

05/16/11 Low -2.20 3 Surface 11.36 3.68 0.42 1.91

05/16/11 Low -2.20 4 Surface 13.80 8.07 1.68 4.42

05/16/11 Low -2.20 5 Surface 10.93 0.76 5.25 0.37

05/16/11 Low -2.20 6 Surface 9.45 0.27 8.34 0.12

05/16/11 Low -2.20 6 Bottom 9.44 0.26 8.34 0.12

05/16/11 Low -2.20 7 Surface 11.23 1.14 6.70 0.56

05/16/11 Low -2.20 8 Surface 10.92 0.93 3.82 0.45

05/16/11 Low -2.20 8 Bottom 11.88 4.67 0.65 2.46

05/16/11 Low -2.20 9 Surface 10.43 0.43 2.58 0.20

05/16/11 Low -2.20 9 Bottom 11.86 4.39 0.60 2.31

05/16/11 High 8.40 1 Surface 11.97 9.30 10.76 5.13

05/16/11 High 8.40 1 Bottom 12.36 21.30 11.14 12.56

05/16/11 High 8.40 2 Surface 12.22 19.50 11.10 11.43

05/16/11 High 8.40 2 Bottom 12.30 21.30 10.98 12.55

05/16/11 High 8.40 3 Surface 12.05 3.69 1.48 1.92

05/16/11 High 8.40 4 Surface 18.62 4.82 20.55 2.56

05/16/11 High 8.40 5 Surface 14.89 0.73 11.39 0.35

05/16/11 High 8.40 6 Surface 10.46 0.28 8.19 0.13

05/16/11 High 8.40 6 Bottom 10.44 0.28 8.00 0.13

05/16/11 High 8.40 7 Surface 14.83 0.99 10.28 0.48

05/16/11 High 8.40 8 Surface 14.22 0.48 4.93 0.23

05/16/11 High 8.40 8 Bottom 14.98 4.45 3.74 2.35

05/16/11 High 8.40 9 Surface 12.81 0.81 7.02 0.39

05/16/11 High 8.40 9 Bottom 13.06 8.57 2.39 4.71

06/17/11 Low -2.60 6 Surface 15.43 4.54 5.25

06/17/11 Low -2.60 6 Bottom 16.94 29.00 3.39

06/17/11 Low -2.60 8 Surface 17.61 1.67 2.26

06/17/11 Low -2.60 8 Bottom 15.57 9.78 0.38

06/17/11 Low -2.60 9 Surface 17.77 2.92 11.11

06/17/11 Low -2.60 9 Bottom 16.85 6.42 1.33

06/17/11 High 9.10 1 Surface 19.47 29.70 7.79 18.56

06/17/11 High 9.10 1 Bottom 17.97 35.50 8.58 22.13

06/17/11 High 9.10 2 Surface 19.33 29.60 7.58 18.16

06/17/11 High 9.10 2 Bottom 17.87 35.60 7.97 22.19

06/17/11 High 9.10 6 Surface 18.48 21.00 5.71 12.47

06/17/11 High 9.10 6 Bottom 18.93 27.30 4.77 16.61

06/17/11 High 9.10 8 Surface 16.85 1.66 1.28 0.83

06/17/11 High 9.10 8 Bottom 16.24 5.68 0.13 3.05

06/17/11 High 9.10 9 Surface 18.39 2.33 2.46 1.19

06/17/11 High 9.10 9 Bottom 17.96 4.71 0.14 2.50

07/13/11 Low -2.07 6 Surface 17.64 30.90 2.32 18.99

07/13/11 Low -2.07 6 Bottom 18.13 32.40 1.47 20.02

07/13/11 Low -2.07 8 Surface 16.32 5.36 2.35 2.86

07/13/11 Low -2.07 9 Surface 17.30 11.51 0.42 6.49

07/13/11 High 8.70 1 Surface 22.83 33.70 6.94 21.04

07/13/11 High 8.70 1 Bottom 20.53 34.20 7.24 21.32

07/13/11 High 8.70 2 Surface 21.02 34.20 7.04 21.33

07/13/11 High 8.70 2 Bottom 20.63 34.30 7.02 21.39

07/13/11 High 8.70 6 Surface 20.31 30.40 3.51 18.72

07/13/11 High 8.70 6 Bottom 19.56 31.70 4.24 19.58

07/13/11 High 8.70 8 Surface 23.96 5.51 1.56 2.97

07/13/11 High 8.70 9 Surface 24.10 9.65 1.11 5.41

08/02/11 Low -0.40 6 Surface 16.50 17.90 2.35 1.42

08/02/11 Low -0.40 6 Bottom 17.61 33.10 4.76 20.75

08/02/11 Low -0.40 8 Surface 25.17 4.85 11.80 2.59

08/02/11 Low -0.40 9 Surface 23.29 9.74 4.03 5.46

08/02/11 High 8.80 1 Surface 23.07 41.70 8.85 26.64

08/02/11 High 8.80 1 Bottom 20.54 42.20 8.81 26.90

08/02/11 High 8.80 2 Surface 20.02 43.10 8.79 27.51

08/02/11 High 8.80 2 Bottom 22.41 41.10 7.53 26.19

08/02/11 High 8.80 6 Surface 17.88 3.28 2.64 1.70

5 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)08/02/11 High 8.80 6 Bottom 20.89 39.10 3.60 24.73

08/02/11 High 8.80 8 Surface 19.30 5.19 0.69 2.77

08/02/11 High 8.80 9 Surface 20.40 9.73 1.33 5.44

09/27/11 Low 2.00 2 Surface 14.13 4.72 4.69 2.50

09/27/11 Low 2.00 6 Surface 14.13 5.49 0.40 2.93

09/27/11 Low 2.00 6 Bottom 14.50 37.00 0.27 23.03

09/27/11 Low 2.00 8 Surface 14.82 7.35 3.51 4.00

09/27/11 Low 2.00 8 Bottom 15.22 8.37 5.04 4.60

09/27/11 Low 2.00 9 Surface 15.95 19.60 5.41 11.53

09/27/11 Low 2.00 9 Bottom 16.18 20.10 6.72 11.85

09/27/11 High 8.60 1 Surface 19.37 43.80 14.93 27.98

09/27/11 High 8.60 1 Bottom 19.22 45.40 15.77 29.11

09/27/11 High 8.60 2 Surface 19.40 34.90 9.44 21.76

09/27/11 High 8.60 2 Bottom 19.66 44.90 9.90 28.78

09/27/11 High 8.60 6 Surface 14.24 2.49 1.61 1.27

09/27/11 High 8.60 6 Bottom 15.53 36.00 1.01 22.39

09/27/11 High 8.60 8 Surface 16.48 7.66 9.10 4.19

09/27/11 High 8.60 8 Bottom 16.19 7.70 12.94 4.28

09/27/11 High 8.60 9 Surface 17.55 10.60 11.12 5.94

09/27/11 High 8.60 9 Bottom 17.17 19.40 11.35 11.42

10/24/11 Low 2.70 1 Surface 8.99 3.51 2.59 1.83

10/24/11 Low 2.70 1 Bottom 8.99 3.53 2.69 1.83

10/24/11 Low 2.70 6 Surface 9.76 2.29 1.11 1.16

10/24/11 Low 2.70 6 Bottom 10.54 22.50 0.10 13.35

10/24/11 Low 2.70 7 Surface 8.53 7.84 2.24 4.26

10/24/11 Low 2.70 8 Surface 9.88 2.55 1.62 1.30

10/24/11 Low 2.70 8 Bottom 11.26 4.23 3.16 2.21

10/24/11 Low 2.70 9 Surface 11.07 7.97 4.30 4.35

10/24/11 Low 2.70 9 Bottom 13.49 14.29 7.33 8.13

10/24/11 High 8.60 1 Surface 12.62 3.59 2.33 1.87

10/24/11 High 8.60 2 Surface 11.32 3.53 2.62 1.84

10/24/11 High 8.60 6 Surface 10.43 1.96 1.44 0.98

10/24/11 High 8.60 6 Bottom 11.04 23.10 1.03 13.94

10/24/11 High 8.60 7 Surface 11.08 7.14 8.94 3.87

10/24/11 High 8.60 8 Surface 11.91 3.16 3.82 1.63

10/24/11 High 8.60 8 Bottom 12.53 4.21 6.02 2.21

10/24/11 High 8.60 9 Surface 13.87 9.28 7.79 5.13

10/24/11 High 8.60 9 Bottom 14.04 13.65 13.44 7.39

11/03/11 Low 4.20 2 Surface 6.86 2.14 3.71 1.08

11/03/11 Low 4.20 6 Surface 7.13 0.82 3.38 0.39

11/03/11 Low 4.20 6 Bottom 7.17 2.42 2.10 1.22

11/03/11 Low 4.20 7 Surface 8.06 6.17 5.90 3.30

11/03/11 Low 4.20 8 Surface 6.66 1.47 4.36 0.72

11/03/11 Low 4.20 8 Bottom 9.33 3.39 3.40 1.75

11/03/11 Low 4.20 9 Surface 7.53 4.61 6.83 2.41

11/03/11 Low 4.20 9 Bottom 10.18 12.44 1.10 7.00

11/03/11 High 8.60 1 Surface 7.85 3.82 5.72 1.98

11/03/11 High 8.60 1 Bottom 8.07 35.10 5.10 21.49

11/03/11 High 8.60 2 Surface 7.95 15.40 3.74 8.78

11/03/11 High 8.60 2 Bottom 8.15 33.80 4.33 20.62

11/03/11 High 8.60 4 Surface 11.90 37.90 5.78 23.55

11/03/11 High 8.60 6 Surface 7.73 0.75 4.03 0.36

11/03/11 High 8.60 6 Bottom 7.97 6.73 1.01 3.62

11/03/11 High 8.60 7 Surface 9.77 6.72 6.11 3.62

11/03/11 High 8.60 8 Surface 9.31 1.80 3.86 0.90

11/03/11 High 8.60 8 Bottom 9.65 3.57 5.08 1.83

11/03/11 High 8.60 9 Surface 9.10 1.10 6.56 0.54

11/03/11 High 8.60 9 Bottom 11.13 12.20 6.20 6.86

12/01/11 Low 4.50 1 Surface 4.76 8.57 6.40 4.66

12/01/11 Low 4.50 2 Surface 4.77 8.52 6.01 4.63

12/01/11 Low 4.50 3 Surface 5.29 35.70 0.60 21.77

12/01/11 Low 4.50 4 Surface 6.76 44.10 18.86 27.54

12/01/11 Low 4.50 5 Surface 4.66 37.00 5.84 22.60

12/01/11 Low 4.50 6 Surface 4.69 3.12 4.97 1.60

12/01/11 Low 4.50 6 Bottom 5.28 2.06 1.23 11.97

12/01/11 Low 4.50 7 Surface 5.26 27.80 7.09 16.57

12/01/11 Low 4.50 8 Surface 6.23 22.00 0.66 12.88

12/01/11 Low 4.50 8 Bottom 7.74 30.10 2.29 18.15

6 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)12/01/11 Low 4.50 9 Surface 6.78 18.00 1.88 10.37

12/01/11 Low 4.50 9 Bottom 8.22 30.40 1.26 18.37

12/01/11 High 9.10 1 Surface 7.41 46.40 6.67 29.17

12/01/11 High 9.10 1 Bottom 7.41 46.60 6.79 29.24

12/01/11 High 9.10 2 Surface 7.37 46.40 6.81 29.16

12/01/11 High 9.10 2 Bottom 7.38 46.50 6.73 29.16

12/01/11 High 9.10 3 Surface 5.35 35.70 0.68 21.77

12/01/11 High 9.10 4 Surface 5.85 44.60 10.49 27.82

12/01/11 High 9.10 5 Surface 4.44 36.70 4.44 22.39

12/01/11 High 9.10 6 Surface 4.51 3.14 5.18 1.61

12/01/11 High 9.10 6 Bottom 4.97 16.30 1.90 9.29

12/01/11 High 9.10 7 Surface 5.15 28.70 4.49 17.15

12/01/11 High 9.10 8 Surface 5.06 8.28 1.54 4.49

12/01/11 High 9.10 8 Bottom 7.45 30.20 1.08 18.21

12/01/11 High 9.10 9 Surface 3.40 4.90 3.75 2.57

12/01/11 High 9.10 9 Bottom 8.18 30.40 1.18 18.37

01/18/12 Low -0.80 1 Surface 0.19 1.66 9.18 0.82

01/18/12 Low -0.80 2 Surface 0.21 1.65 8.99 0.82

01/18/12 Low -0.80 6 Surface 0.16 0.51 8.41 0.24

01/18/12 Low -0.80 6 Bottom 0.17 0.61 8.02 0.29

01/18/12 High 9.20 1 Surface 3.35 40.90 8.74 25.15

01/18/12 High 9.20 1 Bottom 3.89 46.30 8.49 28.85

01/18/12 High 9.20 2 Surface 3.83 46.50 8.22 28.99

01/18/12 High 9.20 2 Bottom 3.89 46.40 8.21 28.92

01/18/12 High 9.20 6 Surface 0.15 0.45 9.17 0.21

01/18/12 High 9.20 6 Bottom 0.18 0.48 8.99 0.22

02/17/12 Low -0.60 1 Surface 5.63 0.78 9.49 0.35

02/17/12 Low -0.60 2 Surface 5.67 0.74 9.29 0.35

02/17/12 Low -0.60 3 Surface 5.47 13.75 2.59 7.74

02/17/12 Low -0.60 4 Surface 8.40 13.45 6.38 7.67

02/17/12 Low -0.60 5 Surface 6.54 8.01 3.60 4.35

02/17/12 Low -0.60 6 Surface 5.70 0.33 9.26 0.15

02/17/12 Low -0.60 6 Bottom 5.69 0.34 9.32 0.15

02/17/12 Low -0.60 7 Surface 6.07 6.95 10.30 3.59

02/17/12 Low -0.60 8 Surface 6.26 3.53 2.13 1.82

02/17/12 Low -0.60 8 Bottom 7.29 25.00 0.37 14.82

02/17/12 Low -0.60 9 Surface 5.80 0.56 5.24 0.26

02/17/12 Low -0.60 9 Bottom 7.77 12.63 7.90 7.09

02/17/12 High 8.20 1 Surface 6.23 1.78 8.80 0.89

02/17/12 High 8.20 2 Surface 6.26 1.79 8.37 0.89

02/17/12 High 8.20 3 Surface 6.72 14.32 2.30 8.04

02/17/12 High 8.20 4 Surface 9.15 12.44 7.82 6.99

02/17/12 High 8.20 5 Surface 8.15 9.34 6.42 5.74

02/17/12 High 8.20 6 Surface 6.25 0.60 7.41 0.28

02/17/12 High 8.20 6 Bottom 6.35 2.92 6.01 1.57

02/17/12 High 8.20 7 Surface 8.56 13.49 9.80 7.49

02/17/12 High 8.20 8 Surface 7.86 7.78 2.54 4.23

02/17/12 High 8.20 8 Bottom 7.24 23.50 2.88 13.73

02/17/12 High 8.20 9 Surface 7.73 2.75 5.86 1.47

02/17/12 High 8.20 9 Bottom 8.72 27.50 4.10 16.61

03/14/12 Low -0.40 1 Surface 6.00 0.88 9.74 0.43

03/14/12 Low -0.40 2 Surface 6.00 0.88 9.57 0.43

03/14/12 Low -0.40 3 Surface 5.80 22.42 1.62 13.40

03/14/12 Low -0.40 4 Surface 11.00 24.88 21.65 15.20

03/14/12 Low -0.40 5 Surface 9.90 13.67 14.14 7.91

03/14/12 Low -0.40 6 Surface 5.80 0.36 8.92 0.17

03/14/12 Low -0.40 6 Bottom 5.80 0.36 8.85 0.17

03/14/12 Low -0.40 7 Surface 8.60 17.10 13.66 10.42

03/14/12 Low -0.40 8 Surface 7.20 0.68 8.33 0.35

03/14/12 Low -0.40 8 Bottom 7.80 19.58 6.10 11.66

03/14/12 Low -0.40 9 Surface 6.50 0.58 8.03 0.26

03/14/12 Low -0.40 9 Bottom 7.90 6.68 8.13 3.56

03/14/12 High 8.40 1 Surface 4.20 16.55 10.65 9.46

03/14/12 High 8.40 1 Bottom 4.20 19.70 10.74 11.55

03/14/12 High 8.40 2 Surface 4.30 7.47 10.20 3.73

03/14/12 High 8.40 2 Bottom 4.20 19.31 10.78 11.20

03/14/12 High 8.40 3 Surface 5.40 22.80 0.45 13.59

03/14/12 High 8.40 4 Surface 6.30 17.37 9.59 10.17

7 of 12


03/14/12 High 8.40 6 Surface 4.50 0.40 9.67 0.19

03/14/12 High 8.40 6 Bottom 4.50 0.37 9.20 0.18

03/14/12 High 8.40 7 Surface 6.20 22.17 7.27 13.18

03/14/12 High 8.40 8 Surface 4.30 1.02 4.68 0.48

03/14/12 High 8.40 8 Bottom 7.20 26.07 0.61 15.71

03/14/12 High 8.40 9 Surface 4.30 0.39 6.13 0.18

03/14/12 High 8.40 9 Bottom 6.10 4.68 5.35 2.53

04/23/12 Low -0.60 2 Surface 13.00 0.80 8.44 0.39

04/23/12 Low -0.60 3 Surface 14.80 7.16 1.92 3.88

04/23/12 Low -0.60 4 Surface 22.85 6.46 13.38 3.29

04/23/12 Low -0.60 5 Surface 22.60 7.55 2.13 4.16

04/23/12 Low -0.60 6 Surface 12.13 0.33 6.07 0.16

04/23/12 Low -0.60 6 Bottom 12.23 0.34 6.02 0.16

04/23/12 Low -0.60 7 Surface 21.98 1.22 9.53 0.60

04/23/12 Low -0.60 8 Surface 17.82 4.18 1.49 2.20

04/23/12 Low -0.60 8 Bottom 17.92 6.83 0.24 3.70

04/23/12 Low -0.60 9 Surface 14.98 1.04 2.30 0.51

04/23/12 Low -0.60 9 Bottom 15.62 3.56 0.74 1.89

04/23/12 High 8.30 1 Surface 15.08 43.90 11.32 27.85

04/23/12 High 8.30 1 Bottom 14.19 44.00 13.20 27.87

04/23/12 High 8.30 2 Surface 14.38 43.90 12.90 27.81

04/23/12 High 8.30 2 Bottom 14.24 43.90 13.27 27.81

04/23/12 High 8.30 3 Surface 10.70 7.28 1.03 3.89

04/23/12 High 8.30 4 Surface 23.79 5.50 13.61 2.96

04/23/12 High 8.30 5 Surface 17.06 8.45 1.64 4.66

04/23/12 High 8.30 6 Surface 10.95 0.31 5.63 0.14

04/23/12 High 8.30 6 Bottom 10.92 0.33 5.44 0.15

04/23/12 High 8.30 7 Surface 16.10 1.31 6.91 0.65

04/23/12 High 8.30 8 Surface 18.54 2.46 3.21 1.26

04/23/12 High 8.30 8 Bottom 19.29 6.97 0.73 3.80

04/23/12 High 8.30 9 Surface 14.88 1.34 3.95 0.66

04/23/12 High 8.30 9 Bottom 15.70 3.15 0.67 1.61

05/07/12 Low -3.00 2 Surface 12.44 0.88 8.86 0.42

05/07/12 Low -3.00 3 Surface 16.31 8.30 2.82 4.52

05/07/12 Low -3.00 4 Surface 23.03 8.59 8.25 4.75

05/07/12 Low -3.00 6 Surface 10.59 0.40 5.21 0.19

05/07/12 Low -3.00 6 Bottom 10.67 0.39 5.18 0.19

05/07/12 Low -3.00 7 Surface 24.53 2.16 7.04 1.10

05/07/12 Low -3.00 8 Surface 14.97 3.56 4.26 1.85

05/07/12 Low -3.00 8 Bottom 15.56 10.64 9.48 5.96

05/07/12 Low -3.00 9 Surface 13.50 1.23 9.41 0.61

05/07/12 Low -3.00 9 Bottom 14.28 3.27 8.30 1.63

05/07/12 High 9.10 1 Surface 11.90 45.20 14.36 28.60

05/07/12 High 9.10 1 Bottom 12.02 45.40 14.58 28.68

05/07/12 High 9.10 2 Surface 11.84 45.40 14.26 28.74

05/07/12 High 9.10 2 Bottom 11.86 45.30 14.36 28.67

05/07/12 High 9.10 3 Surface 12.44 8.43 1.89 4.34

05/07/12 High 9.10 4 Surface 23.50 11.26 8.79 6.38

05/07/12 High 9.10 6 Surface 10.95 0.38 5.28 0.18

05/07/12 High 9.10 6 Bottom 11.04 0.65 4.82 0.31

05/07/12 High 9.10 7 Surface 15.83 2.31 7.13 1.18

05/07/12 High 9.10 8 Surface 17.59 1.49 7.20 0.74

05/07/12 High 9.10 8 Bottom 17.48 11.76 17.44 6.65

05/07/12 High 9.10 9 Surface 14.52 0.93 7.61 0.45

05/07/12 High 9.10 9 Bottom 15.19 2.63 10.48 1.35

06/20/12 Low -1.70 2 Surface 16.86 2.73 6.45 1.41

06/20/12 Low -1.70 3 Surface 15.97 19.00 1.18 11.15

06/20/12 Low -1.70 4 Surface 26.35 27.60 13.31 16.97

06/20/12 Low -1.70 6 Surface 14.51 18.50 3.31 10.81

06/20/12 Low -1.70 6 Bottom 14.42 18.30 3.42 10.62

06/20/12 Low -1.70 7 Surface 27.79 4.75 7.82 2.54

06/20/12 Low -1.70 8 Surface 16.51 1.14 2.90 0.56

06/20/12 Low -1.70 8 Bottom 16.48 1.24 2.83 0.61

06/20/12 Low -1.70 9 Surface 15.80 2.57 1.15 1.31

06/20/12 Low -1.70 9 Bottom 15.31 3.01 1.16 1.55

06/20/12 High 8.60 1 Surface 18.20 42.70 8.74 27.15

06/20/12 High 8.60 1 Bottom 17.81 42.70 8.61 27.14

8 of 12


06/20/12 High 8.60 2 Bottom 17.88 42.80 8.48 27.21

06/20/12 High 8.60 3 Surface 15.17 20.00 1.00 11.77

06/20/12 High 8.60 4 Surface 28.93 32.10 17.56 20.10

06/20/12 High 8.60 6 Surface 14.06 8.07 1.43 4.42

06/20/12 High 8.60 6 Bottom 16.58 19.80 8.46 11.66

06/20/12 High 8.60 7 Surface 19.61 4.81 5.33 2.56

06/20/12 High 8.60 8 Surface 18.47 1.16 3.52 0.57

06/20/12 High 8.60 8 Bottom 17.51 1.41 1.52 0.70

06/20/12 High 8.60 9 Surface 16.55 2.29 2.59 1.16

06/20/12 High 8.60 9 Bottom 15.80 3.02 0.90 1.56

07/05/12 Low -2.40 2 Surface 15.32 1.59 6.56 0.79

07/05/12 Low -2.40 3 Surface 14.76 5.70 0.58 3.00

07/05/12 Low -2.40 4 Surface 26.56 22.00 16.79 13.24

07/05/12 Low -2.40 5 Surface 23.84 13.39 7.12 7.70

07/05/12 Low -2.40 6 Surface 12.58 0.92 4.42 0.50

07/05/12 Low -2.40 6 Bottom 14.16 27.30 2.04 16.23

07/05/12 Low -2.40 7 Surface 22.16 1.70 10.11 0.86

07/05/12 Low -2.40 8 Surface 21.14 0.70 2.72 0.34

07/05/12 Low -2.40 8 Bottom 16.10 0.88 1.45 0.43

07/05/12 Low -2.40 9 Surface 15.93 1.08 2.45 0.53

07/05/12 Low -2.40 9 Bottom 16.00 1.97 2.31 1.00

07/05/12 High 9.00 1 Surface 18.00 39.20 8.66 24.69

07/05/12 High 9.00 1 Bottom 17.05 39.40 9.10 24.99

07/05/12 High 9.00 2 Surface 17.97 38.90 8.52 24.48

07/05/12 High 9.00 2 Bottom 17.20 39.40 8.99 24.80

07/05/12 High 9.00 3 Surface 13.92 6.55 0.80 3.53

07/05/12 High 9.00 4 Surface 31.18 27.90 17.20 17.13

07/05/12 High 9.00 5 Surface 18.34 13.37 2.94 7.65

07/05/12 High 9.00 6 Surface 13.62 0.85 3.19 0.44

07/05/12 High 9.00 6 Bottom 18.10 36.50 6.48 22.89

07/05/12 High 9.00 7 Surface 18.41 1.92 4.95 0.96

07/05/12 High 9.00 8 Surface 19.30 0.81 3.36 0.39

07/05/12 High 9.00 8 Bottom 17.73 1.14 0.47 0.56

07/05/12 High 9.00 9 Surface 16.14 0.69 1.99 0.33

07/05/12 High 9.00 9 Bottom 15.39 2.32 0.30 1.18

08/02/12 Low -1.70 6 Surface 14.41 11.74 1.04 6.88

08/02/12 Low -1.70 6 Bottom 14.85 20.20 0.97 11.57

08/02/12 Low -1.70 8 Surface 17.62 1.57 2.97 0.78

08/02/12 Low -1.70 8 Bottom 16.61 1.62 1.49 0.81

08/02/12 Low -1.70 9 Surface 17.37 2.68 4.13 1.38

08/02/12 Low -1.70 9 Bottom 16.11 3.61 1.02 1.88

08/02/12 High 8.60 1 Surface 24.36 38.10 5.99 24.15

08/02/12 High 8.60 1 Bottom 22.43 39.40 6.34 24.93

08/02/12 High 8.60 2 Surface 25.13 34.80 5.88 22.77

08/02/12 High 8.60 2 Bottom 23.90 37.70 4.53 23.85

08/02/12 High 8.60 6 Surface 15.74 19.40 4.80 11.33

08/02/12 High 8.60 6 Bottom 16.58 4.35 2.00 2.29

08/02/12 High 8.60 8 Surface 19.81 1.61 4.44 0.81

08/02/12 High 8.60 8 Bottom 19.21 1.65 2.44 0.83

08/02/12 High 8.60 9 Surface 18.95 2.69 5.27 1.38

08/02/12 High 8.60 9 Bottom 17.82 3.17 2.06 1.64

09/28/12 Low 1.90 6 Surface 12.11 1.63 4.64 0.81

09/28/12 Low 1.90 6 Bottom 12.16 1.60 3.67 0.80

09/28/12 High 8.20 1 Surface 20.94 45.20 7.45 29.05

09/28/12 High 8.20 2 Surface 20.29 45.50 6.37 29.16

09/28/12 High 8.20 6 Surface 13.62 1.68 4.95 0.84

09/28/12 High 8.20 6 Bottom 13.80 1.43 3.61 0.71

10/16/12 Low 4.50 1 Surface 11.42 2.97 7.00 1.53

10/16/12 Low 4.50 2 Surface 11.42 3.54 5.90 1.86

10/16/12 Low 4.50 6 Surface 11.77 1.24 4.10 0.61

10/16/12 Low 4.50 6 Bottom 11.71 21.70 2.96 12.74

10/16/12 Low 4.50 8 Surface 11.98 2.97 4.50 1.53

10/16/12 Low 4.50 8 Bottom 12.67 4.84 4.27 2.56

10/16/12 Low 4.50 9 Surface 13.41 13.52 7.07 7.52

10/16/12 High 8.70 1 Surface 12.96 17.40 7.02 17.06

10/16/12 High 8.70 1 Bottom 13.07 32.30 7.16 19.79

10/16/12 High 8.70 2 Surface 12.97 31.80 7.10 19.46

9 of 12


10/16/12 High 8.70 6 Surface 11.84 1.14 2.83 0.56

10/16/12 High 8.70 6 Bottom 11.87 18.00 2.70 10.64

10/16/12 High 8.70 8 Surface 12.33 3.60 2.95 1.87

10/16/12 High 8.70 8 Bottom 12.67 4.33 3.30 2.31

10/16/12 High 8.70 9 Surface 13.85 14.90 7.50 8.42

10/16/12 High 8.70 9 Bottom 12.14 9.08 6.45 5.01

11/20/12 Low 4.20 1 Surface 8.31 10.94 6.60 6.08

11/20/12 Low 4.20 2 Surface 8.31 10.90 6.41 6.05

11/20/12 Low 4.20 4 Surface 8.25 28.00 2.43 16.79

11/20/12 Low 4.20 6 Surface 8.41 6.96 5.94 3.75

11/20/12 Low 4.20 6 Bottom 8.41 6.85 6.07 3.69

11/20/12 Low 4.20 7 Surface 8.16 10.97 9.12 6.10

11/20/12 Low 4.20 8 Surface 8.50 25.30 0.84 15.05

11/20/12 Low 4.20 8 Bottom 8.76 30.60 0.43 18.52

11/20/12 Low 4.20 9 Surface 8.50 18.40 1.34 10.65

11/20/12 Low 4.20 9 Bottom 8.75 26.80 2.43 16.03

11/20/12 High 9.10 1 Surface 8.28 23.60 8.59 13.94

11/20/12 High 9.10 1 Bottom 8.45 40.50 7.51 25.16

11/20/12 High 9.10 2 Surface 8.28 28.20 9.06 16.93

11/20/12 High 9.10 2 Bottom 8.30 31.00 9.04 18.77

11/20/12 High 9.10 3 Surface 8.20 25.30 8.50 15.04

11/20/12 High 9.10 3 Bottom 8.33 31.50 8.05 19.10

11/20/12 High 9.10 4 Surface 8.31 28.30 8.54 16.99

11/20/12 High 9.10 4 Bottom 8.33 31.50 6.75 19.10

11/20/12 High 9.10 5 Surface 8.30 28.40 8.59 17.06

11/20/12 High 9.10 5 Bottom 8.34 31.50 7.15 19.10

11/20/12 High 9.10 6 Surface 8.30 26.20 8.45 15.62

11/20/12 High 9.10 6 Bottom 8.30 30.60 7.70 18.50

11/20/12 High 9.10 7 Surface 8.37 27.90 8.05 16.73

11/20/12 High 9.10 7 Bottom 8.29 29.50 7.19 17.78

11/20/12 High 9.10 8 Surface 8.41 25.00 7.29 14.85

11/20/12 High 9.10 8 Bottom 8.42 29.10 5.90 17.52

11/20/12 High 9.10 9 Surface 8.34 20.60 5.67 12.03

11/20/12 High 9.10 9 Bottom 8.42 26.90 3.55 16.08

12/07/12 Low 2.30 1 Surface 6.17 6.78 8.14 3.65

12/07/12 Low 2.30 2 Surface 6.16 6.68 7.91 3.57

12/07/12 Low 2.30 4 Surface 7.66 37.40 2.47 23.02

12/07/12 Low 2.30 6 Surface 6.28 3.06 7.77 1.57

12/07/12 Low 2.30 6 Bottom 6.27 3.08 7.55 1.58

12/07/12 Low 2.30 7 Surface 7.04 31.10 7.91 18.79

12/07/12 Low 2.30 8 Surface 7.44 36.30 1.47 22.27

12/07/12 Low 2.30 8 Bottom 8.48 38.00 2.56 23.46

12/07/12 Low 2.30 9 Surface 5.99 3.55 3.45 1.83

12/07/12 Low 2.30 9 Bottom 8.92 39.10 4.69 24.23

12/07/12 High 9.00 1 Surface 6.21 22.20 10.04 13.00

12/07/12 High 9.00 1 Bottom 6.20 22.80 9.80 13.38

12/07/12 High 9.00 2 Surface 6.20 22.50 9.62 13.00

12/07/12 High 9.00 2 Bottom 6.20 22.70 9.42 13.32

12/07/12 High 9.00 3 Surface 6.26 23.10 8.94 13.58

12/07/12 High 9.00 4 Surface 6.38 23.20 9.72 13.64

12/07/12 High 9.00 4 Bottom 7.06 32.80 5.01 19.65

12/07/12 High 9.00 5 Surface 6.44 19.00 7.95 10.93

12/07/12 High 9.00 6 Surface 6.91 0.89 7.97 0.43

12/07/12 High 9.00 6 Bottom 6.52 15.80 7.78 9.01

12/07/12 High 9.00 7 Surface 6.41 13.00 8.04 7.30

12/07/12 High 9.00 7 Bottom 7.07 31.60 6.55 19.05

12/07/12 High 9.00 8 Surface 7.18 18.90 1.41 10.94

12/07/12 High 9.00 8 Bottom 8.61 38.10 1.59 23.54

12/07/12 High 9.00 9 Surface 7.53 5.01 1.66 2.64

12/07/12 High 9.00 9 Bottom 8.74 39.10 4.96 24.22

01/07/13 Low -0.70 1 Surface 5.71 1.80 10.11 0.90

01/07/13 Low -0.70 2 Surface 5.70 1.79 10.09 0.89

10 of 12

Date Tide Height (ft) Site Depth Temp (⁰C) SpC (mS) DO (mg/L) Salinity (PSS)01/07/13 Low -0.70 3 Surface 5.27 13.27 4.20 7.48

01/07/13 Low -0.70 4 Surface 5.94 37.80 3.02 23.20

01/07/13 Low -0.70 4 Bottom 5.89 37.10 3.41 22.60

01/07/13 Low -0.70 5 Surface 5.82 6.79 4.08 3.77

01/07/13 Low -0.70 6 Surface 5.70 0.75 9.78 0.36

01/07/13 Low -0.70 6 Bottom 5.70 0.74 9.77 0.35

01/07/13 Low -0.70 7 Surface 5.45 11.53 6.75 6.41

01/07/13 Low -0.70 8 Surface 5.37 22.30 1.05 13.05

01/07/13 Low -0.70 8 Bottom 5.27 31.70 1.52 19.12

01/07/13 Low -0.70 9 Surface 5.79 3.53 3.17 1.82

01/07/13 Low -0.70 9 Bottom 5.78 31.80 6.49 19.20

01/07/13 High 9.20 1 Surface 6.35 30.60 9.59 18.43

01/07/13 High 9.20 1 Bottom 6.22 37.80 8.63 23.22

01/07/13 High 9.20 2 Surface 6.22 31.00 9.57 18.10

01/07/13 High 9.20 2 Bottom 6.15 37.60 9.27 23.08

01/07/13 High 9.20 3 Surface 6.09 33.70 9.07 20.47

01/07/13 High 9.20 4 Surface 5.72 4.90 9.49 2.57

01/07/13 High 9.20 4 Bottom 5.44 38.10 2.08 23.38

01/07/13 High 9.20 5 Surface 5.62 9.41 9.09 5.23

01/07/13 High 9.20 6 Surface 5.69 0.43 10.57 0.20

01/07/13 High 9.20 6 Bottom 5.66 1.41 10.17 0.78

01/07/13 High 9.20 7 Surface 5.66 1.33 9.39 0.65

01/07/13 High 9.20 7 Bottom 5.09 8.77 3.93 4.80

01/07/13 High 9.20 8 Surface 5.02 16.80 2.35 9.59

01/07/13 High 9.20 8 Bottom 5.07 32.70 0.88 19.77

01/07/13 High 9.20 9 Surface 5.40 0.99 6.51 0.48

01/07/13 High 9.20 9 Bottom 5.44 31.90 3.01 19.25

02/03/13 Low 0.60 2 Surface 5.80 1.09 8.42 0.52

02/03/13 Low 0.60 3 Surface 6.04 12.67 1.05 7.16

02/03/13 Low 0.60 4 Surface 7.43 33.40 11.94 20.33

02/03/13 Low 0.60 5 Surface 6.23 6.91 1.76 3.71

02/03/13 Low 0.60 6 Surface 5.79 0.51 7.88 0.24

02/03/13 Low 0.60 6 Bottom 5.79 0.55 7.71 0.26

02/03/13 Low 0.60 7 Surface 6.19 2.71 6.33 1.35

02/03/13 Low 0.60 8 Surface 6.53 2.64 3.36 1.34

02/03/13 Low 0.60 8 Bottom 6.59 17.20 0.36 9.87

02/03/13 Low 0.60 9 Surface 6.11 3.43 3.83 1.77

02/03/13 Low 0.60 9 Bottom 7.19 26.70 11.85 16.05

02/03/13 High 9.00 1 Surface 5.32 1.38 8.56 0.67

02/03/13 High 9.00 2 Bottom 5.32 1.09 7.96 0.53

02/03/13 High 9.00 3 Surface 5.43 13.96 0.57 8.07

02/03/13 High 9.00 4 Surface 7.04 32.10 13.20 19.45

02/03/13 High 9.00 5 Surface 5.58 7.98 1.47 4.32

02/03/13 High 9.00 6 Surface 5.40 0.50 7.95 0.24

02/03/13 High 9.00 6 Bottom 5.40 0.54 7.84 0.26

02/03/13 High 9.00 7 Surface 5.58 3.23 6.42 1.66

02/03/13 High 9.00 8 Surface 6.20 3.35 1.94 1.72

02/03/13 High 9.00 8 Bottom 6.61 15.50 0.28 8.76

02/03/13 High 9.00 9 Surface 5.53 2.48 4.29 1.25

02/03/13 High 9.00 9 Bottom 6.94 26.70 9.85 15.91

03/08/13 Low -0.10 1 Surface 5.58 0.76 8.42 0.36

03/08/13 Low -0.10 2 Surface 5.58 0.76 8.09 0.37

03/08/13 Low -0.10 3 Surface 4.84 5.47 2.00 2.90

03/08/13 Low -0.10 4 Surface 10.80 9.71 4.12 5.37

03/08/13 Low -0.10 5 Surface 6.50 2.07 1.40 1.05

03/08/13 Low -0.10 6 Surface 5.41 0.40 8.09 0.19

03/08/13 Low -0.10 6 Bottom 5.44 0.41 8.01 0.19

03/08/13 Low -0.10 7 Surface 4.22 1.28 6.45 0.63

03/08/13 Low -0.10 8 Surface 7.77 1.80 5.85 0.90

03/08/13 Low -0.10 8 Bottom 9.74 20.20 11.25 11.93

03/08/13 Low -0.10 9 Surface 5.05 0.60 7.04 0.28

03/08/13 Low -0.10 9 Bottom 9.61 19.30 16.01 11.24

03/08/13 High 7.60 1 Surface 7.91 0.75 9.50 0.36

03/08/13 High 7.60 2 Surface 7.94 0.76 9.20 0.36

03/08/13 High 7.60 3 Surface 9.99 6.20 2.13 3.35

03/08/13 High 7.60 4 Surface 11.11 14.80 6.33 8.45

03/08/13 High 7.60 5 Surface 11.20 3.19 5.20 1.63

03/08/13 High 7.60 6 Surface 7.55 0.38 8.36 0.18

11 of 12


03/08/13 High 7.60 7 Surface 11.98 1.64 9.28 0.82

03/08/13 High 7.60 8 Surface 12.48 2.43 4.74 1.24

03/08/13 High 7.60 8 Bottom 9.91 12.22 2.56 6.80

03/08/13 High 7.60 9 Surface 8.04 0.84 7.34 0.41

03/08/13 High 7.60 9 Bottom 10.35 19.40 11.71 11.38

04/25/13 Low -0.09 1 Surface 10.09 0.61 10.17 0.29

04/25/13 Low -0.09 2 Surface 10.15 0.61 9.68 0.29

04/25/13 Low -0.09 3 Surface 11.99 4.89 1.02 2.59

04/25/13 Low -0.09 4 Surface 16.42 7.84 11.52 4.28

04/25/13 Low -0.09 5 Surface 16.28 3.55 2.20 1.85

04/25/13 Low -0.09 6 Surface 9.23 0.34 7.16 0.16

04/25/13 Low -0.09 6 Bottom 9.36 0.36 7.21 0.17

04/25/13 Low -0.09 7 Surface 18.76 1.30 9.17 0.64

04/25/13 Low -0.09 8 Surface 14.10 3.01 1.83 1.55

04/25/13 Low -0.09 8 Bottom 15.06 10.82 1.17 5.60

04/25/13 Low -0.09 9 Surface 11.57 4.12 8.95 2.16

04/25/13 Low -0.09 9 Bottom 13.50 10.82 12.06 6.07

04/25/13 High 8.20 1 Surface 11.65 0.66 7.59 0.31

04/25/13 High 8.20 2 Surface 11.54 0.65 7.21 0.31

04/25/13 High 8.20 3 Surface 14.40 3.74 1.29 1.95

04/25/13 High 8.20 4 Surface 21.98 11.54 16.57 6.54

04/25/13 High 8.20 5 Surface 18.35 3.55 1.94 1.86

04/25/13 High 8.20 6 Surface 10.83 0.37 5.86 0.18

04/25/13 High 8.20 6 Bottom 10.78 0.38 5.71 0.18

04/25/13 High 8.20 7 Surface 21.29 1.48 7.58 0.74

04/25/13 High 8.20 8 Surface 18.72 6.06 2.83 3.27

04/25/13 High 8.20 8 Bottom 18.14 10.06 2.84 5.55

04/25/13 High 8.20 9 Surface 14.64 2.67 9.54 1.37

04/25/13 High 8.20 9 Bottom 17.01 16.90 4.40 9.20

05/10/13 Low -1.00 2 Surface 15.63 1.36 6.62 0.68

05/10/13 Low -1.00 6 Surface 12.84 0.97 1.42 0.46

05/10/13 Low -1.00 6 Bottom 13.41 5.66 1.07 3.03

05/10/13 Low -1.00 8 Surface 18.44 2.34 2.64 1.19

05/10/13 Low -1.00 8 Bottom 16.78 5.39 1.77 2.89

05/10/13 Low -1.00 9 Surface 17.95 5.98 0.24 3.22

05/10/13 Low -1.00 9 Bottom 17.02 9.37 0.09 5.25

05/10/13 High 8.40 1 Surface 19.71 35.90 7.22 22.46

05/10/13 High 8.40 1 Bottom 19.48 38.40 7.35 24.26

05/10/13 High 8.40 2 Surface 19.31 32.60 7.31 20.19

05/10/13 High 8.40 2 Bottom 19.32 36.30 6.91 22.73

05/10/13 High 8.40 6 Surface 13.29 0.69 1.69 0.33

05/10/13 High 8.40 6 Bottom 13.74 5.33 2.43 1.84

05/10/13 High 8.40 8 Surface 16.67 2.32 2.63 1.18

05/10/13 High 8.40 8 Bottom 17.07 7.57 2.34 4.14

05/10/13 High 8.40 9 Surface 17.36 5.97 0.53 2.29

05/10/13 High 8.40 9 Bottom 17.11 11.95 0.38 6.52

06/05/13 Low -0.50 2 Surface 14.38 3.28 6.09 1.70

06/05/13 Low -0.50 3 Surface 14.70 14.34 1.47 8.21

06/05/13 Low -0.50 4 Surface 22.10 29.00 5.47 17.82

06/05/13 Low -0.50 6 Surface 13.46 5.64 0.77 2.07

06/05/13 Low -0.50 6 Bottom 14.35 25.10 1.71 15.12

06/05/13 Low -0.50 7 Surface 23.98 9.41 1.73 5.25

06/05/13 Low -0.50 8 Surface 15.98 1.48 1.06 0.74

06/05/13 Low -0.50 8 Bottom 16.05 2.92 0.24 1.48

06/05/13 Low -0.50 9 Surface 15.37 4.11 0.53 2.16

06/05/13 Low -0.50 9 Bottom 15.95 6.38 0.47 3.43

06/05/13 High 7.60 1 Surface 20.38 13.45 5.81 6.34

06/05/13 High 7.60 2 Surface 16.97 3.09 4.42 1.61

06/05/13 High 7.60 3 Surface 15.66 15.10 0.87 8.63

06/05/13 High 7.60 4 Surface 27.66 29.40 11.68 18.22

06/05/13 High 7.60 6 Surface 14.21 4.56 1.04 2.00

06/05/13 High 7.60 6 Bottom 15.72 23.80 4.69 14.23

06/05/13 High 7.60 7 Surface 25.09 13.03 1.12 7.50

06/05/13 High 7.60 8 Surface 20.15 2.37 1.61 1.21

06/05/13 High 7.60 8 Bottom 19.87 3.26 0.47 1.71

06/05/13 High 7.60 9 Surface 17.77 2.90 1.03 1.50

06/05/13 High 7.60 9 Bottom 17.31 6.78 5.10 3.67

12 of 12

Appendix C: Graphs

Temperature Graphs (pg 1 of 2)

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date

Temperature: Station 1

Site 1: Low Tide, Surface

Site 1: High Tide, Surface

culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date


Station 2: Low Tide, Surface

Station 2: High Tide, Surface

culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date




culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date




culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date




culvert removal

Temperature Graphs (pg 2 of 2)

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date


Station 6= Low tide, Surface


culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date




culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date




culvert removal

0.005.00

10.0015.0020.0025.0030.0035.00

Tem

p (d

eg C

)

Date




culvert removal

Dissolved Oxygen Graphs (pg 1 of 2)

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20.00

25.00

DO

(mg/

L)

Date

Dissolved Oxygen: Station 1



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20.00

25.00

DO

(mg/

L)

Date




culvert removal

0.00

5.00

10.00

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25.00

DO

(mg/

L)

Date




culvert removal

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10.00

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25.00

DO

(mg/

L)

Date




culvert removal

0.00

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10.00

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DO

(mg/

L)

Date




culvert removal

Dissolved Oxygen Graphs (pg 2 of 2)

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20.00

25.00

DO

(mg/

L)

Date




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10.00

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25.00

DO

(mg/

L)

Date




culvert removal

0.00

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(mg/

L)

Date




culvert removal

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DO

(mg/

L)

Date




culvert removal

Salinity Graphs (pg 1 of 2)

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30.00

40.00Sa

linity

(PSS

)

Date

Salinity: Station 1



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20.00

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40.00

Salin

ity (P

SS)

Date

Salinity: Station 2



culvert removal

0.00

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20.00

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40.00

Salin

ity (P

SS)

Date

Salinity: Station 3



culvert removal

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30.00

40.00

Salin

ity (P

SS)

Date

Salinity: Station 4



culvert removal

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10.00

20.00

30.00

40.00

Salin

ity (m

g/L)

Date

Salinity: Station 5



culvert removal

Salinity Graphs (pg 2 of 2)

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40.00

Salin

ity (P

SS)

Date

Salinity: Station 6



culvert removal

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10.00

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40.00

Salin

ity (P

SS)

Date

Salinity: Station 7



culvert removal

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10.00

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30.00

40.00

Salin

ity (P

SS)

Date

Salinity: Station 8



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Salin

ity (P

SS)

Date

Salinity: Station 9



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Stratification Graphs: Site 6 (pg 1 of 2)

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Salin

ity (P

SS)

Date

Salinity and Stratification: Station 6

Station 6, High Tide, Bottom

Station 6, High Tide, Surface

Station 6, Low Tide, Bottom

Station 6, Low Tide, Surface

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0.00

5.00

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15.00

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25.00

Tem

p (d

eg C

)

Date

Temperature and Stratification: Station 6





culvert removal

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2.00

4.00

6.00

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10.00

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DO

(mg/

L)

Date

Dissolved Oxygen and Stratification: Station 6





culvert removal

Stratification Graphs: Site 8 (pg 1 of 2)

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Tem

p (d

eg C

)

Date

Temperature and Stratification: Station 8





culvert removal

0.00

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20.00

DO

(mg/

L)

Date

Dissolved Oxygen and Stratification: Station 8





culvert removal

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Salin

ity (P

SS)

Date

Salinity and Stratification: Station 8





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Appendix D: Photographs of Sampling Stations

1 of 3

WQ Station 1 WQ Station 2


2 of 3



3 of 3

WQ Station 9

Chuckanut Village Marsh Water Quality …...Chuckanut Bay (NES 2008). The Chuckanut Creek pocket...

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Transcript of Chuckanut Village Marsh Water Quality …...Chuckanut Bay (NES 2008). The Chuckanut Creek pocket...