SMRWMA Regional Clearinghouse


The Santa Margarita River Watershed Management Area Regional Clearinghouse

The Copermittees in the Santa Margarita River Watershed Management Area (WMA) work cooperatively to implement the requirements of the Regional MS4 Permit (Order No. R9-2013-0001, as amended by R9-2015-0001 and R9-2015-0100) issued by the California Regional Water Quality Control Board, San Diego Region.

This Regional Clearinghouse provides public access to all of the plans, reports, maps, and supporting information required to implement the Regional MS4 Permit. The Water Quality Improvement Plan (WQIP) is the overarching watershed plan, whereas the Jurisdictional Runoff Management Program (JRMP) documents provide more details regarding implementation.

Principal Watershed Copermittee: Riverside County Flood Control and Water Conservation District

Contact Information for all jurisdictions subject to the San Diego Municipal Storm Water Permit Order No. R9-2015-0100.


Riverside County (WQMP)

San Diego County




SMRWMA Document and Data Library

Water Quality Improvement Plan (WQIP)

Annual Reports

Report Of Waste Discharge (ROWD) 2017

Maps and Data

Santa Margarita River Nutrient Initiative – Stakeholder Group

Stakeholder Effort




MS4 Data

Riverside County Copermittees Resources

As required by the San Diego Regional Municipal Stormwater NPDES Permit, all new and resubmittals of WQMPs shall use the 2018 WQMP Manual. All previous WQMP versions are no longer in effect.

Jurisdictional Runoff Management Plan (JRMP)

Water Quality Management Plan (WQMP) 2018

Other Resources

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