Stormwater

Notice an illicit discharge and/or pollutants along a roadway and/or entering the County storm drain system? Pollutants may include: oil, wastewater, litter, sediment, or any unknown material.

You can report any such problems by calling the Illicit Discharge Complaint Hotline: (707) 234-6679

Be prepared with your name, date of incident/activity observed, address/location of the activity, and a description of the incident/activity observed.

Please refer to the following Illicit Discharge Tracking Sheet used by Code Enforcement personnel to log the complaint to see what information you will be asked to provide:

• Illicit Discharge Tracking Sheet(PDF, 419KB)

If hazardous materials appear to be present and/or the incident/activity is observed after 5pm or on the weekend, call 911, the Mendocino County Sheriff’s Office, or Howard Forest Incident Command.

• Mendocino County Sheriff's Office: (707) 463-4411
• Howard Forest Cal Fire Station: (707) 459 7414

• Mendocino County Low Impact Development (LID) Manual 2021 (MS4 permit)(PDF, 25MB)
• Index of parcels subject to MS4 Ordinance (Ukiah)(PDF, 991KB)
• Index of parcels subject to MS4 Ordinance (Fort Bragg)(PDF, 374KB)
• Maps of MS4 Stormwater permitting areas (Ukiah)(PDF, 25MB)
• Maps of MS4 Stormwater permitting areas (Fort Bragg)(PDF, 3MB)
• Construction Site Stormwater Runoff Information- County wide(PDF, 57KB)
• MS 4 Area Construction Site Stormwater Runoff Information for Over the Counter Permits(PDF, 29KB)
• MS4 Area New and Post Construction Site Stormwater Checklist(PDF, 3MB)

Annual NPDES MS4 stormwater reports can be accessed using the State of California's, StormWater Multiple Application and Reporting Tracking System (SMARTS). Please note, SMARTS works best with the Microsoft Edge browser.

• County of Mendocino Construction Best Management Practices for over-the-counter Building Permits(PDF, 19KB)
• Erosion Control Special Permit Requirements(PDF, 239KB)
• Small Construction Site Stormwater Erosion and Sediment Control Plan Template(PDF, 3MB)
• Well Drilling Erosion Control and Sediment Plan(PDF, 18KB)

Residential

• CWP Rain Barrel Garden(PDF, 221KB)
• Health Yard from the Audubon(PDF, 5MB)
• Solution to Pollution(PDF, 618KB)
• The Pacific Ocean Starts on Your Street (English)(PDF, 13MB)
• The Pacific Ocean Starts on Your Street (Spanish)(PDF, 13MB)
• Residential Car Washing(PDF, 1MB)
• Car Washing (English)(PDF, 323KB)
• Car Washing (Spanish)(PDF, 325KB)

Commercial/Industrial

• Auto Industry Flyer(PDF, 689KB)
• Mobile Cleaning - Driveway Sealing Handout(PDF, 1MB)
• Pesticide Application Flyer(PDF, 4MB)
• Nurseries and Bulk Materials Storage Handout(PDF, 223KB)

Construction

• Erosion and Sediment Control Brochure(PDF, 239KB)

General

• Urban Facts(PDF, 238KB)
• Runoff Poster(PDF, 1014KB)
• After the Storm(PDF, 425KB)
• River Friendly Car Washing(PDF, 8MB)
• Adopt-A-County Road Program
• MendoRecycle Sharps Disposal Flyer(PDF, 11MB)

• Low Impact Development (LID) Fact Sheet
• LID Fact Sheet #1: Challenges the perception that LID isn't worthwhile and provides general background information that outlines hydrologic and economic benefits provided by LID.
  • Benefits of LID: How LID Can Protect your Community's Resources
• LID Fact Sheet #2: Addresses LID’s place in the jumble of terms for managing the environmental impacts of growth that coexist today and describes and distinguishes these terms
  
  • Terminology of LID: Distinguishing LID from other Techniques that Address Community Growth Issues
• LID Fact Sheet #3: Challenges the perception that LID is too expensive.
  
  • Costs of LID: LID Saves Money and Protects Your Community's Resources
• LID Fact Sheet #4: Challenges the perception that LID is unattractive.
  
  • Aesthetics of LID: LID Technologies Can Benefit Your Community's Visual Environment
• LID Fact Sheet #5: Challenges the perception that LID doesn't work
  
  • Effectiveness of LID: Proven LID Technologies Can Work for Your Community
• LID Fact Sheet #6: Challenges the perception that LID is too hard or costly to maintain
  
  • Maintenance of LID: Communities Are Easily Managing LID Practices (2 pp)
• LID Fact Sheet #7: Highlights incentive strategies to catalyze LID
  
  • Encouraging LID: Incentives Can Encourage Adoption of LID Practices in your Community

North Coast Stormwater Coalition - The North Coast Stormwater Coalition is comprised of stormwater management staff from the participating Cities and Counties on California's north coast, as well as local, state and federal agency representatives, non-profit organizations, tribes, the CA State and Regional Water Boards, consultants, engineers, graduate students, and interested community members.

Russian River Watershed Association - The Russian River Watershed Association is a coalition of eleven cities, counties and special districts in the Russian River Watershed that have come together to coordinate regional programs for clean water, fisheries restoration and watershed enhancement.