Quantity, Timing, and Distribution of Freshwater Flows Into Northeastern Florida Bay
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Transcript of Quantity, Timing, and Distribution of Freshwater Flows Into Northeastern Florida Bay
![Page 1: Quantity, Timing, and Distribution of Freshwater Flows Into Northeastern Florida Bay](https://reader033.fdocuments.in/reader033/viewer/2022061618/568131b2550346895d981eb9/html5/thumbnails/1.jpg)
Quantity, Timing, and Distribution of Freshwater Flows Into Northeastern
Florida Bay
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Objectives• Collect continuous stage, velocity and salinity data at major creeks flowing into
northeastern Florida Bay
• Compute discharge at creeks and study the quantity, timing and distribution of that flow
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Why is Flow Information Needed?• Accurate flow information is needed to help understand the circulation, mixing, and salinity dynamics of Florida Bay and
the Everglades
• Flow data helps quantify nutrient and sediment flux
• Flow, stage, and salinity data help verify inland simulations of marsh-flow dynamics
• Performance of management practices
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Overview• Study area
– Monitoring sites and feature descriptions– Buttonwood embankment
• Quantity and Distribution– Methods of acoustic flow measurements– Data from creek monitoring sites– Flow characteristics
• Timing– Seasonal– Storm events– Management
• Summary and data availability
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Study Area
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Monitoring Sites and Structures
~ 5 milesS18C
S175
S197
S332TSB
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McCormick Creek
Taylor River
Upstream Taylor
East Creek
Western Extent of Study Area
~ 1.5 miles
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Upstream Taylor
Little Madeira BayTaylor River
Buttonwood embankment
Taylor River Study Area
~ 0.5 miles
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Mud Creek
Trout Creek
Stillwater Creek
Joe Bay
Central Extent of Study Area
~0.5 miles
JB8W
JB5C
JB2E
JB1E
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Daily Mean Salinity in Joe BayMay, 1999 - September, 2000
0
5
10
15
20
25
30
35
40
May-99 Jul-99 Sep-99 Nov-99 Jan-00 Mar-00 May-00 Jul-00 Sep-00
Dai
ly M
ean
Sal
init
y (p
pt)
Joe Bay 1E Joe Bay 2E
Joe Bay 5C Joe Bay 8W
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Stillwater Creek
Oregon CreekWest Highway Creek
East Highway Creek
Eastern Extent of Study Area
~ 1.5 miles
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Acoustic Doppler Current Profiler (ADCP)
Acoustic Velocity Meter (AVM)
Side LookingDoppler
Quantity of Flow is Measured Using Acoustic Techniques
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Average Creek Discharge
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~ 5 milesS18C
S175
S197
S332TSB
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Daily Salinity at Trout and McCormick Creeks
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Percent of Total Measured Discharge at Creeks from 1996 to 1999
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~0.5 miles
Flow Exchange Between Joe Bay and Long Sound
Joe Bay
Snag Bay Long Sound
Florida Bay
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7-1-99 Discharge (cfs)
111
104
53
49
74
569
60
~0.5 miles
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127
131
50
21
324
1090
49
9-24-99 TS Harvey Discharge (cfs)
~0.5 miles
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261
170
68
13
479
1880
92
10-19-99 H Irene Discharge (cfs)
~0.5 miles
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Timing of Flow
•Seasonal trends
•Storm events
•Managed flow
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Seasonal Timing of Flow Showing Brackish to Fresh Transition at Taylor River
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Stage at Trout Creek During Storm Events
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Discharge at Trout Creek During Hurricane Irene
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Salinity at Trout Creek During Hurricane Irene
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~ 5 milesS18C
S175
S197
S332TSB
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Comparison of Mean Monthly Structure Inflows and Creek Outflows
-1000
-500
0
500
1000
1500
2000
2500
Apr-96 Oct-96 Apr-97 Oct-97 Apr-98 Oct-98 Apr-99 Oct-99
Mea
n M
on
thly
Dis
char
ge
(cfs
)
Structure inflows
Creek outflows H. Irene
H. MitchTS. Josephine
El Nino~
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Summary
• Collect continuous stage, velocity and salinity data at major creeks flowing into northeastern Florida Bay and compute creek discharge
• Accurate information on the quantity, timing, and distribution of flow is needed to help understand the circulation, mixing, and salinity dynamics of Florida Bay and the Everglades;
• Trout Creek is the major contributor of freshwater flow to northeastern Florida Bay
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Summary continued
• Seasonality and storm events drive the timing of flow at the creeks and structures
• McCormick Creek in the western extent of the study area, shows less connection to inflow from structures and increased salinity during dry periods
• Flow exchange occurs between Joe Bay and Long Sound and is controlled by water levels in the Taylor Slough and C-111 basin
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Data Availability
• Daily values of stage, discharge and salinity available on the SOFIA web page:
• http://sophia.er.usgs.gov
• 15 minute data available upon request
• USGS fact sheet available on the Magnitude and Distribution of Flow into Northeastern Florida Bay