On January 29, 2010 the Santa Ana Regional Water Quality Control Board issued a fourth-term area wide National Pollutant Discharge Elimination System (NPDES) Municipal Separate Storm Sewer System Permit (MS4 Permit) to the Riverside County Flood Control and Water Conservation District (the Principal Permittee), the County of Riverside and the Cities of Beaumont, Calimesa, Canyon Lake, Corona, Hemet, Lake Elsinore, Moreno Valley, Menifee, Norco, Perris, Riverside, San Jacinto and Wildomar (Permittees). The Santa Ana MS4 Permit is for the portion of the Santa Ana River watershed located within Riverside County (Order No. R8-2010-0033, NPDES Permit No. CAS618033). The Permittees’ stormwater programs are designed to ensure compliance with this permit. On June 7, 2013 the Santa Ana Regional Water Quality Control Board amended the permit (Order No. R8-2013-0024) to include the Cities of Eastvale and Jurupa Valley. On January 29, 2015 the Permittees received an administrative extension of the Riverside County Municipal Stormwater Permit (NPDES No. CAS618033) from the Santa Ana Regional Water Quality Control Board.

MEMBER AGENCIES: Riverside County Flood Control and Water Conservation District is the Principal Permittee of the Santa Ana MS4 Permit. The following Municipalities are Co-permittees:

    City of Beaumont
    City of Eastvale City of Hemet City of Jurupa Valley City of Lake Elsinore
    City of Menifee City of Moreno Valley City of Norco City of Perris
    City of Riverside City of San Jacinto County of Riverside

Compliance Documents:
WQMP WAP DAMP Annual Reports ROWD Maps TMDL Monitoring LIP

Benefit Assessment:
Benefit Assessments are apportioned on the basis of proportionate stormwater runoff generated by each parcel. This method of assessment is consistent with State law and the District Act. The amount of benefit is computed based on parcel size (acreage) and use classification. The fee is referenced on property tax bills as “FLDCNTL Stormwater/ clean water”.

For Questions Regarding the Stormwater Benefit Assessment Fees, please contact the District’s consultant, Webb and Associates at (800) 439-6553.

Engineer's Report:   Fiscal Year 13/14 - Santa Ana Watershed
  Fiscal Year 14/15 - Santa Ana Watershed
  Fiscal Year 15/16 - Santa Ana Watershed
  Fiscal Year 16/17 - Santa Ana Watershed
  Fiscal Year 17/18 - Santa Ana Watershed

Applications / Forms:
Third Party non-storm water Discharge Application - Riverside County Flood Control - Water Conservation District

Landscaping, Pest Management and other Informationals

U.S. Dept. of Agriculture- Natural Resources Conservation Service: Backyard Wetland
Nutrient Management
Pest Management
Wildlife Habitat
Riverside-Corona Resource Conservation District: Wild About Natives: Why Garden with Native Plants
Living On The Edge (Reducing Impacts)

Additional Web Resources:
Public Education Program Web Site
California Storm Water Quality Association (CASQA) BMP Handouts
Total Maximum Daily Load (TMDL)
Santa Ana Region Basin Plan
Santa Ana Region 8 Water Board
NPDES Training Web Page