1. Water Control Structure Inventory U.S. Fish and Wildlife Service, Arcata California with funding from the Humboldt Bay Harbor, Recreation, & Conservation District, and the CA Department of Fish and Game for Humboldt Bay, California

2. 2 of 14 Project Objectives Identify and catalog man-made structures that affect water flow within and adjacent to tidal lands. Identify and catalog man-made structures that affect 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 information with an easy to use web interface and/or, Produce a database populated with attribute information with an easy to use web interface and/or, Investigate placing the data on a DFG or Harbor District – sponsored IMS site Investigate placing the data on a DFG or Harbor District – sponsored IMS site USFWS Water Control Structure Presentation

3. 3 of 14 Project Steps Identify existing data sources. Identify existing data sources. Develop a database structure that meets the needs for the restoration community Develop a database structure that meets the needs for the restoration community Develop a field method for collection of water control structures. Develop a field method for collection of water control structures. Collect field data into a GIS database containing all known water control structures. Collect field data into a GIS database containing all known water control structures. Build a public web interface to connect to the database. Build a public web interface to connect to the database. Conduct outreach to publicize the database. Conduct outreach to publicize the database. USFWS Water Control Structure Presentation

4. 4 of 14 Existing Data CDFG (OSPR) at one time had a dataset that was lost due to computer failure. CDFG (OSPR) at one time had a dataset that was lost due to computer failure. Existing datasets developed by CalTrans and RCAA were reviewed Existing datasets developed by CalTrans and RCAA were reviewed CalTrans shapefile was a Humboldt County Culvert Inventory, primarily consisting of culverts along highways CalTrans shapefile was a Humboldt County Culvert Inventory, primarily consisting of culverts along highways Shapefile shows both ends of each culvert Shapefile shows both ends of each culvert Locations were based on highway postmile database Locations were based on highway postmile database RCAA Points were approximated from descriptions in a paper publication from 2000 RCAA Points were approximated from descriptions in a paper publication from 2000 Positional Accuracy is poor and variable Positional Accuracy is poor and variable 31 points were defined for the Humboldt Bay region outside of duplicated CalTrans locations 31 points were defined for the Humboldt Bay region outside of duplicated CalTrans locations Several important attributes were lacking, as well as photographs Several important attributes were lacking, as well as photographs USFWS Water Control Structure Presentation

5. 5 of 14 Typical data errors encountered in existing data USFWS Water Control Structure Presentation This feature (original point location)… …is really here. This feature… …is really here.

6. 6 of 14 Data Collection Trimble GeoXT GPS units were used (accuracy < 3 meters) Trimble GeoXT GPS units were used (accuracy < 3 meters) A data dictionary was developed containing the following fields: A data dictionary was developed containing the 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, etc.) Subtype (Top-Hinge round, Side-hinge, Rubber duckbill, 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, leaking, impeded) Current Status (functional, broken-open, broken-closed, leaking, impeded) USFWS Water Control Structure Presentation

7. 7 of 14 Data Collection Data dictionary fields (continued): Data dictionary fields (continued): Owner (CDFG, USFWS, CalTrans, City of Arcata, etc.) Owner (CDFG, USFWS, CalTrans, City of Arcata, etc.) Up-Channel Habitat (fresh water, brackish, marine) Up-Channel Habitat (fresh water, brackish, 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) Comments Comments Field Crew Initials Field Crew Initials USFWS Water Control Structure Presentation

8. 8 of 14 USFWS Water Control Structure Presentation Results Project Area bounded by Hwy 255 on north (except entire Mad River Slough included), Hwy 101 on east (except east to Old Arcata Road and Elk River Road), and Hookton Road on south. Project Area bounded by Hwy 255 on north (except entire Mad River Slough included), Hwy 101 on east (except east to Old Arcata Road and Elk River Road), and Hookton Road on south. Currently 371 features in database, including: Currently 371 features in database, including: 79 tidegate features 79 tidegate features 9 Flash Board structures 9 Flash Board structures 282 Culvert features 282 Culvert features 165 of the 371 (44%) of the structures were collected with GPS and photographed 165 of the 371 (44%) of the structures were collected with GPS and photographed

9. 9 of 14 USFWS Water Control Structure Presentation Results (cont’d) There are some structures on private lands that could not be accounted for. Where known (or seen), these structures were included using recent aerial photography as a reference There are some structures on private lands that could not be accounted for. Where known (or seen), these structures were included using recent aerial photography as a reference There are undoubtedly structures that we are not aware of and missed. These can always be added when we are made aware of them. There are undoubtedly structures that we are not aware of and missed. These can always be added when we are made aware of them. Some low level of maintenance is expected to be needed, adding and deleting points, etc. Some low level of maintenance is expected to be needed, adding and deleting points, etc.

10. USFWS Water Control Structure Presentation 10 of 14 Lots of Variation in Structures

11. 11 of 14 Map Products – Tile 1 (Arcata) USFWS Water Control Structure Presentation Culverts are colored red Tidegates are yellow

12. 12 of 14 Map Products – Tile 2 (Eureka) USFWS Water Control Structure Presentation Culverts are colored red Tidegates are yellow

13. 13 of 14 Map Products – Tile 3 (South Bay) USFWS Water Control Structure Presentation Culverts are colored red Tidegates are yellow

14. 14 of 14 Remaining Issues Private land gaps Private land gaps Data maintenance Data maintenance Posting to CalFish Website Posting to CalFish Website USFWS Water Control Structure Presentation