Sonoma County Hazard Mitigation Plan

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The Sonoma County Board of Supervisors adopted the 2011 Update of the Sonoma County Hazard Mitigation Plan (SCHMP) on October 25, 2011. The Plan identifies high hazard areas and assesses vulnerabilities from earthquakes, floods, wildland fires, and landslides. Moreover, the Plan identifies mitigation strategies the County can take as part of 5-year implementation plan to reduce the level of injury, property loss, and community disruption resulting from such hazards. Adoption of the Plan helps retain the County’s eligibility for pre and post disaster community assistance from the Federal Emergency Management Agency (FEMA).

Due to size/download time, the Plan has been divided into individual sections. A complete copy is also available at the bottom of this page (but is only recommended for those with a DSL or T1 connection).

These documents are saved in Adobe Acrobat format.
Visit our download page for a free copy of Acrobat Reader.

i	Cover and Table of Contents		187 kb
ii	Executive Summary		118 kb
Chapters
1	Introduction		168 kb
2	Earthquake Hazard and Risk Assessment		436 kb
3	Flood Hazard and Risk Assessment		304 kb
4	Wildfire Hazard and Risk Assessment		332 kb
5	Landslide Hazard and Risk Assessment		67 kb
6	Mitigation Strategies		252 kb
7	Plan Implementation Process		222 kb
8	Map Figures
	Figure 8.1	Earthquake Faults and Areas of Liquefaction	1.2 MB
	Figure 8.2	Earthquake Shaking Potential	623 kb
	Figure 8.3	Earthquake Vulnerability	726 kb
	Figure 8.4	Watersheds	1.7 MB
	Figure 8.5	100-Year Flood Zone	1.3 MB
	Figure 8.6	Repetitive Loss Properties in Lower Russian River	2.9 MB
	Figure 8.7	Dam Failure Inundation	1.3 MB
	Figure 8.8	Wildland Fire Threat	699 kb
	Figure 8.9	Historic Fires	1.1 MB
	Figure 8.10	Fire Districts and Fire Responsibility Areas	727 kb
	Figure 8.11	Landslide Hazard Areas	938 kb
	All Maps	Figures 8.1 thru 8.11	2.9 MB
Appendices
A	Draft Board of Supervisors Resolution		67 kb
B	Sonoma County General Plan 2020 Public Safety Element		74 kb
C	Methods and Sources		114 kb
D	Exposure of County Owned Buildings to Hazards		125 kb
E	Earthquake Loss Estimates		685 kb
F	Planning Process		101 kb
G	Projected Sea Level Rise and Tsunami Run Up Zones		6.4 MB
H	References and Endnotes		57 kb

Complete Copy of the Hazard Mitigation Plan (Large File Size)			12 MB

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Although every effort is made to provide complete and accurate information on this website, users are advised to contact appropriate PRMD staff before making project decisions. This may involve contacting more than one section within PRMD (e.g. Building, Plan Check, Zoning, Well & Septic, etc.), since each section implements specific codes or ordinances which may affect your project.