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Storm Water – Documents

Document Accessibility Notice

Low Impact Development (LID)

North Coast Region

LID is required for projects with the North Coast regulatory areas.
Storm Water Low Impact Development Technical Design Manual

San Francisco Bay Region

LID is required for projects with the SF Bay regulatory areas.

Contact Storm Water staff for the appropriate San Francisco Bay Region documents at (707) 565-1900, option 4, then option 4 again.

Municipal Separate Storm Sewer Systems Permits (MS4 Permits)

Phase I – North Coast Region

Phase II – San Francisco Bay Region (PDF: 1.22 MB)

Storm Water Management Plans

Phase I (PDF)

Phase II (PDF)

Annual Report

Phase 1 Storm Water Annual Report for Fiscal Year 2013-2014 (PDF: 14.62 MB)

Phase 2 annual reports are now submitted electronically to the State Water Resources Control Board in Sacramento. Please see their SMARTS system for this annual report.


Document Accessibility Notice
Some of these documents are saved in Portable Document Format (PDF) or Microsoft Excel. We recommend you download Adobe® Reader®, a free software that allows you view and print PDF files. For Excel Spreadsheets, download Microsoft® Excel® Viewer or (Calc spreadsheet viewer).

For accessibility assistance with these documents, please contact Permit Sonoma (PRMD), Sonoma County at (707) 565-1900.
Although every effort is made to provide complete and accurate information on this website, users are advised to contact appropriate Permit Sonoma staff before making project decisions. This may involve contacting more than one section within Permit Sonoma(e.g. Building, Plan Check, Zoning, Well & Septic, etc.) since each section implements specific codes or ordinances which may affect your project.
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Permit and Resource Management Department County of Sonoma