Stevens Creek Toxicity TMDL

Stevens Creek is located in Santa Clara County, and is one of the most natural creeks in the San Francisco Bay Area.  The 20-mile long creek flows through Monte Bello Open Space area, cities of Los Altos, Sunnyvale, and Mountain View, and flows into the Lower South Bay via Whisman Slough.  Stevens Creek Reservoir is the major impoundment on the creek. 

The Basin Plan includes aquatic toxicity water quality objectives. Stevens Creek was identified in 2010 as impaired by toxicity in the water column because water samples from Stevens Creek were toxic to the test species (fish, water flea, and algae), resulting in reduced organism survival, growth, or reproduction.  Water Board staff has recently conducted sampling of the creek to examine the current status of impairment.

The expected completion date for the TMDL is 2019.

(Map courtesy of SCVURPPP, FY05-06 Monitoring Report)

Stevens Creek within Stevens Creek County Park
below Stevens Creek Reservoir

Stevens Creek Near HWY 101
Located at the Bottom of the Watershed



TMDL Development

Staff Technical Reports (coming soon)

For more information contact:
Tong Yin, Ph.D., P.E.
Water Resource Control Engineer
San Francisco Bay Regional Water Quality Control Board
1515 Clay Street, Suite 1400
Oakland, CA 94612
Phone: 510-622-2418
Fax: 510-622-2460