Los Angeles County Stormwater Program
http://ladpw.org/WMD/npdes/
Orange County Stormwater Program
http://ocwatersheds.com/programs/waterways/stormwater
Riverside County Stormwater Program
http://www.floodcontrol.co.riverside.ca.us/stormwater/
San Bernardino County Stormwater Program
http://sbcountystormwater.org/
San Diego County Stormwater Program
http://www.projectcleanwater.org/
Ventura County Stormwater Program
http://www.vcstormwater.org/
Environmental Protection Agency (EPA)
http://www.epa.gov
EPA NPDES Website
https://www.epa.gov/npdes
EPA Office of Waste Water Management
http://www.epa.gov/owm/
EPA Region 9 Water Programs
http://www.epa.gov/region09/water/npdes/stormwater.php
EPA Surf Your Watershed
http://www.epa.gov/surf/
The U.S. Coast Guard
https://search.www.uscg.mil/search?affiliate=uscg&query=stormwater