Bay Area Dam Failure Inundation Maps from ABAG
Before viewing the maps, please be aware of the following information.

The maps were developed by dam owners to fulfill state law requirements. The maps are intended for emergency planning purposes.
The maps were developed using engineering hydrology principals and represent the best estimate of where the water would flow if the dam completely failed with a full reservoir. The inundation pathway is based on completely emptying the reservoir and does not include run-off from storms.
Many of the maps were developed in the 1970's. Should the maps have been developed more recently, different assumptions and map-making methods would have been used.

Copies of inundation maps for individual dams may be purchased from the California Department of Water Resources, Micrographics Department. Their phone number is (916) 653-6537.

To view a dam failure inundation hazard map, choose a city area from the window below, then click on "View Map."



ABAG, the Association of Bay Area Governments, is the regional planning and services agency for the nine-county San Francisco Bay Area.

This page was last updated 8/27/03 by jbp.