Health and Safety projects include identifying alternatives to reduce nuisance flooding including increased flooding along Elk River Road and addressing domestic and agricultural water supply needs to the upper watershed.
Between May 2022 and June 2023, three rounds of Elk River resident interviews were conducted by Regional Water Board staff. The open-ended interview questions were designed to address the topics of 100- year flood levels, road flooding, drinking water, and wastewater systems. Participants were given an opportunity to share personal experiences on each of these topics and to provide any solutions they saw for the watershed. Information shared during the interviews will help with future health and safety project efforts.
Nuisance Flooding
In September 2020, the Regional Water Board funded a technical memorandum on that included extreme flood events up to the 1% annual chance flood (i.e., the FEMA 100 Year Flood Plain). The 1% Annual Chance Flood Elevation Estimates for the Lower Elk River, Humboldt County (100-year Flood Memo), was completed by Northern Hydrology and Engineering and was distributed to Humboldt County flood protection authorities and made publicly available. Completed in 2021, the memo indicated that the Special Flood Hazard Area on the existing FEMA Flood Insurance Rate Map did not represent current conditions.
In December 2024, after receiving a request from Humboldt County, FEMA started a process to update their Flood Insurance Rate Map for the Elk River valley to better represent current flooding conditions. FEMA contractors will start land surveys in the watershed late winter/early spring 2025 to support the update. The update will take approximately three years to fully complete.
Elk River Road
In 2023 the Regional Water Board funded Humboldt County to complete a Project Study Report (PSR) for Elk River Road flooding. A necessary first step, the PSR will identify solutions to address the road flooding along Elk River Road at Zanes Road, Berta Road and the flood curve (near the intersection of Wrigley Road and Elk River Road). The project is expected to be done by December 2025 when the technical report with preliminary engineering designs for potential road improvements will be completed.
Drinking Water
Regional Water Board staff continues to work with state and local programs (e.g., Safe and Affordable Funding for Equity and Resilience (SAFER) Drinking Water Program, the Division of Drinking Water, Division of Financial Assistance,) to find alternatives for sustainable drinking water solutions to the upper Elk watershed.
In December 2024, the Humboldt County Department of Public Works submitted a formal request to the State Water Board’s Division of Financial Assistance to assess the feasibility of extending municipal water service into the Elk River valley through their Technical Assistance (TA) Program. If selected for the TA program, the feasibility study would be conducted at no cost or obligation to residents, the county, or the Humboldt County Community Services. The study would help inform future decisions by developing accurate technical and cost information but would not decide if water service would be extended. DFA is currently evaluating the TA request.
Community Engagement-Emergency Response
On December 11th, the Elk Stewardship Program hosted a community meeting focused on emergency planning and response. In addition to general Stewardship updates, Humboldt County Office of Emergency Services presented on emergency response programs and how the community can prepare for flooding and/or other emergencies.