Water Control Structure Inventory U.S. Fish and Wildlife Service, Arcata California with funding...

Water Control Structure Inventory

U.S. Fish and Wildlife Service, Arcata Californiawith funding from the Humboldt Bay Harbor, Recreation, &

Conservation District, and the CA Department of Fish and Game

for Humboldt Bay, California

2 of 14

Project ObjectivesProject Objectives

Identify and catalog man-made structures that affect Identify and catalog man-made structures that affect water flow within and adjacent to tidal lands. water flow within and adjacent to tidal lands.

Produce accurate maps showing locations of structures. Produce accurate maps showing locations of structures. Produce a database populated with attribute Produce a database populated with attribute

information with an easy to use web interface and/or, information with an easy to use web interface and/or, Investigate placing the data on a DFG or Harbor Investigate placing the data on a DFG or Harbor

District – sponsored IMS siteDistrict – sponsored IMS site

USFWS Water Control Structure Presentation

3 of 14

Project StepsProject Steps

Identify existing data sources.Identify existing data sources. Develop a database structure that meets the Develop a database structure that meets the

needs for the restoration communityneeds for the restoration community Develop a field method for collection of water Develop a field method for collection of water

control structures.control structures. Collect field data into a GIS database Collect field data into a GIS database

containing all known water control structures.containing all known water control structures. Build a public web interface to connect to the Build a public web interface to connect to the

database.database. Conduct outreach to publicize the database.Conduct outreach to publicize the database.


4 of 14

Existing DataExisting Data CDFG (OSPR) at one time had a dataset that was lost due to CDFG (OSPR) at one time had a dataset that was lost due to

computer failure.computer failure. Existing datasets developed by CalTrans and RCAA were Existing datasets developed by CalTrans and RCAA were

reviewedreviewed CalTrans shapefile was a Humboldt County Culvert CalTrans shapefile was a Humboldt County Culvert

Inventory, primarily consisting of culverts along Inventory, primarily consisting of culverts along highwayshighways

Shapefile shows both ends of each culvertShapefile shows both ends of each culvert Locations were based on highway postmile databaseLocations were based on highway postmile database

RCAA Points were approximated from descriptions in a RCAA Points were approximated from descriptions in a paper publication from 2000paper publication from 2000

Positional Accuracy is poor and variablePositional Accuracy is poor and variable 31 points were defined for the Humboldt Bay region outside of 31 points were defined for the Humboldt Bay region outside of

duplicated CalTrans locationsduplicated CalTrans locations Several important attributes were lacking, as well as photographsSeveral important attributes were lacking, as well as photographs


5 of 14

Typical data errors encountered in Typical data errors encountered in existing dataexisting data


This feature (original point location)…

…is really here.

This feature…

…is really here.

6 of 14

Data CollectionData Collection Trimble GeoXT GPS units were used Trimble GeoXT GPS units were used (accuracy < 3 (accuracy < 3

meters)meters) A data dictionary was developed containing the A data dictionary was developed containing the

following fields:following fields: Longitude and Latitude (in decimal degrees)Longitude and Latitude (in decimal degrees) Type (culvert, tidegate, flash board)Type (culvert, tidegate, flash board) Subtype (Top-Hinge round, Side-hinge, Rubber duckbill, Subtype (Top-Hinge round, Side-hinge, Rubber duckbill,

etc.)etc.) Material (concrete, steel, aluminum, wood, plastic)Material (concrete, steel, aluminum, wood, plastic) X Dimension/Y Dimension (for non-round structures)X Dimension/Y Dimension (for non-round structures) Current Status (functional, broken-open, broken-closed, Current Status (functional, broken-open, broken-closed,

leaking, impeded)leaking, impeded)


7 of 14

Data CollectionData Collection Data dictionary fields (continued):Data dictionary fields (continued):

Owner (CDFG, USFWS, CalTrans, City of Owner (CDFG, USFWS, CalTrans, City of Arcata, etc.)Arcata, etc.)

Up-Channel Habitat (fresh water, brackish, Up-Channel Habitat (fresh water, brackish, marine)marine)

Fish Passage – Adult (suitable, limited, none)Fish Passage – Adult (suitable, limited, none) Fish Passage – Juvenile (suitable, limited, none)Fish Passage – Juvenile (suitable, limited, none) Photo Number(s)Photo Number(s) CommentsComments Field Crew InitialsField Crew Initials


8 of 14USFWS Water Control Structure Presentation

ResultsResults Project Area bounded by Hwy 255 on Project Area bounded by Hwy 255 on

north (except entire Mad River Slough north (except entire Mad River Slough included), Hwy 101 on east (except east to included), Hwy 101 on east (except east to Old Arcata Road and Elk River Road), and Old Arcata Road and Elk River Road), and Hookton Road on south.Hookton Road on south.

Currently 371 features in database, Currently 371 features in database, including:including: 79 tidegate features79 tidegate features 9 Flash Board structures9 Flash Board structures 282 Culvert features282 Culvert features

165 of the 371 (44%) of the structures 165 of the 371 (44%) of the structures were collected with GPS and were collected with GPS and photographedphotographed

9 of 14USFWS Water Control Structure Presentation

Results (cont’d)Results (cont’d) There are some structures on private There are some structures on private

lands that could not be accounted for. lands that could not be accounted for. Where known (or seen), these structures Where known (or seen), these structures were included using recent aerial were included using recent aerial photography as a referencephotography as a reference

There are undoubtedly structures that we There are undoubtedly structures that we are not aware of and missed. These can are not aware of and missed. These can always be added when we are made always be added when we are made aware of them.aware of them.

Some low level of maintenance is Some low level of maintenance is expected to be needed, adding and expected to be needed, adding and deleting points, etc.deleting points, etc.

USFWS Water Control Structure Presentation 10 of 14

Lots of Variation in Lots of Variation in StructuresStructures

11 of 14

Map Products – Tile 1 Map Products – Tile 1 (Arcata)(Arcata)


Culverts are colored redTidegates are yellow

12 of 14

Map Products – Tile 2 Map Products – Tile 2 (Eureka)(Eureka)



13 of 14

Map Products – Tile 3 Map Products – Tile 3 (South Bay)(South Bay)



14 of 14

Remaining IssuesRemaining Issues

Private land gapsPrivate land gaps

Data maintenanceData maintenance

Posting to CalFish WebsitePosting to CalFish Website


Water Control Structure Inventory U.S. Fish and Wildlife Service, Arcata California with funding...

Documents

Transcript of Water Control Structure Inventory U.S. Fish and Wildlife Service, Arcata California with funding...