Water Resources

Welcome to the official webpage for the Lake County Water Resources Department. The Lake County Water Resources Department works to restore, conserve, and advocate as stewards of Lake County's watersheds. Lake County hosts the largest natural lake in California and the oldest lake in North America, Clear Lake.

To promote both an environmentally and economically sustainable watershed, the Water Resources Department is tasked with:

  • Aquatic Plant Management
  • Aids to Navigation
  • Groundwater Monitoring
  • Flood Management
  • Lakebed Management
  • Highland Springs Recreation Area
  • Stormwater Management
  • Surface Water Quality Monitoring
  • Environmental Education/Outreach

Contact our team today to learn more about our programs and projects in Lake County.

Check it out! Hitch Water Quality Wednesday!

Document Resources

Frequently Used Applications / Forms

  1. Highland Springs Hunting Permit (PDF)
  2. Highland Springs Property Usage Permit (PDF)
  3. Lakebed Encroachment Permit (PDF)
  4. Water Complaint Form (PDF)
  5. Contractors on Clear Lake (PDF)
  6. 2023 Clear Lake Aquatic Plant Management Permit Application (PDF).
  7. Fees Effective July 1, 2023

Hot Topics

  1. Low-Interest Loans for Water Well Systems (PDF)
  2. Clear Lake December 1, 2022 - Lake Level Data (PDF)
  3. Blue Ribbon Committee Fact Sheets (PDF)
  4. Atmospheric River Brings Heavy Rain Strong Winds & Potential for Flooding
  5. Sandbag Information/Locations
New! Quagga Mussel Program Outreach Video!


Clear Lake From Bartlett Springs Road