Geyserville Drainage Project Development
What’s Happening?
The County is studying Geyserville’s drainage system to understand why flooding happens and to prioritize fixes. The study will produce a report and project list with preliminary cost estimates to guide future improvements.
How We Got Here
Recurring flooding concerns prompted a closer look at how storm runoff moves through town—including ditches, streams, pipes, and culverts—and where the system needs repair or upgrades.
Why It Matters
- Reduce flooding risks for homes, businesses, and roads
- Target dollars where they do the most good with a prioritized project list
- Coordinate agencies and residents so maintenance and improvements are clear and sustainable
- Meet funding and procurement rules (FEMA and County requirements, including 2 CFR Part 200)
What’s Next
The County will work with residents, Caltrans, Sonoma Water, Cal Am Water, CDFW, and others to:
- Gather and verify data on runoff sources and discharge locations
- Map the existing drainage network and categorize facilities
- Visit sites with residents to pinpoint problem areas and identify solutions
- Hold meetings on in-stream issues that raise flood risk
- Educate residents on simple maintenance steps (e.g., Drainage Day)
- Develop an annual maintenance plan with responsible parties
- Create a prioritized list of improvement projects (to ~30% design) with preliminary costs and funding options
The consultant’s work is complete when the final report is approved.
Timeline (high-level)
- Data collection & mapping: In progress
- Agency & community meetings: In progress / ongoing
- Draft and final report with prioritized projects and costs: To follow data and outreach
Get Involved / Contact
Questions or local drainage insights to share? Contact Yoash Tilles at yoash.tilles@sonomacounty.gov.
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