Water Quality Planning Tool

This Water Quality Planning Tool was designed for Caltrans to use applicable water quality standards while developing strategies for achieving regulatory compliance with storm water permits.

Using the tool
The information on water quality is divided in to hydrologic sub-areas (HSAs). To find a HSA use the HSA name or post-mile of the road in an HSA.
HSA name or number
Post-Miles

For more information contact
Division of Environmental Analysis, Stormwater Unit
California Department of Transportation
P.O. Box 942874, MS-27
Sacramento, CA 94274-0001
Email:

California State University Sacramento Training Research