Documents
Public records, reports, and data about Cole Creek and the restoration project, all in one place. Links go to the original source whenever there is one. Our own summaries are in the updates, and where the project stands is on the plan page.
Restoration project and funding
County and state records for the Cole Creek planning and design project.
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Lake County Board of Supervisors, file 26-0761 · August 4, 2026
Board item approving a $349,647 agreement, July 31, 2026 to March 1, 2028. The agenda attachment is a draft copy of the agreement.
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Lake County Watershed Protection District · September 29, 2025
Answers to bidder questions about the request for proposals.
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Lake County Watershed Protection District · September 15, 2025
Task C covers planning and design for 1.55 miles of Cole Creek, with a map of the project reach.
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Lake County Board of Supervisors, file 25-880 · September 9, 2025
Board item accepting grant funds of up to $500,122 for Clear Lake hitch habitat planning and design in Cole Creek.
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California Department of Fish and Wildlife · June 25, 2025
Award of up to $500,122 from the Nature Based Solutions: Wildlife Corridors grant program. Grant work must be finished by March 1, 2028.
Monitoring and data
Measurements and data from the neighborhood.
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Map locations and photos Spreadsheet
Cole Creek Flooding · Updated regularly
Every location on our map, with coordinates, descriptions, sources, and photo dates.
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Cole Creek Flooding, with data from O'Connor Environmental · July 14, 2026
Water level monitoring results for winters 2025 and 2026, with methods and data quality checks.
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Sam Euston · February 18, 2025
Unedited aerial footage of the flooded neighborhood.
Clear Lake hitch
Hitch spawn in Cole Creek, and the restoration is funded as hitch habitat work.
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Center for Biological Diversity · April 21, 2026
Press release on the suit asking a court to make the U.S. Fish and Wildlife Service decide on listing.
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Center for Biological Diversity · February 3, 2026
60-day notice to the U.S. Fish and Wildlife Service.
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Lake County Board of Supervisors · February 11, 2025
Water Resources and CDFW briefing starts around 1:24:42. Community testimony on Cole Creek follows around 2:35:35.
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U.S. Fish and Wildlife Service, Federal Register · January 16, 2025
Proposed federal listing with a section 4(d) rule.
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Center for Biological Diversity · September 25, 2012
Petition to list the hitch under the California Endangered Species Act, with history of creek changes around Clear Lake.
Research and history
Studies and historical records about Cole Creek and Big Valley.
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UC Davis (Cortés et al.) · January 2026
Includes nutrient, sediment, and flow findings for Cole Creek.
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Thompson et al., California Fish and Game 99(1) · Winter 2013
History of Clear Lake and its fish. Notes that many local creeks were channelized and leveed after frequent flooding, citing a 1974 Army Corps flood plain report on Big Valley streams, including Cole Creek.
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Lake County · 1999
Background on Big Valley groundwater and flood-control changes to creeks around Kelseyville.
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U.S. Army Corps of Engineers, Sacramento District · June 1974
Prepared for Lake County. Maps the expected flood areas along Manning, Adobe, Kelsey, and Cole Creeks, with past floods, flood heights, and bridges and culverts that block flow. Includes photos of Cole Creek flooding at Soda Bay Road in January 1974. Our cleaned-up copy of the Google Books scan (34 MB).
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U.S. Geological Survey · 1959
Shows the straightened Cole Creek channel and levee.
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U.S. Army Corps of Engineers · Current entry
Federal database entry for the Cole Creek levee.
Community input
Comments we've submitted on public plans.
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Cole Creek Flooding · April 2026
Asks for priority funding for Green Acres, required channel maintenance, and mapping of flooded evacuation roads.
20 documents. Know of a record that belongs here, or spot a broken link? Email mail@colecreekflooding.com.