The Santa Ana Region Monitoring Plan fulfills the requirements of Phase I MS4 Permit issued by the Santa Ana RWQCB. Maps of the Santa Ana Region monitoring sites is provided in the link below: …

In a presentation at the California Stormwater Quality Association (CASQA) quarterly meeting on July 15, 2021, the OC Stormwater Program shared how data from a number of sources is enabling the…

The OC Stormwater Program has developed an ArcGIS Story Map that acts as a guided tour of Best Management Practice (BMP) implementation throughout the South Orange County Watershed Management Area (…

County of Orange/ Orange County Flood Control District BMP Design ManualThe County of Orange/Orange County Flood Control District (County/OCFCD) is subject to two Municipal Separate Storm Sewer…

OC Watersheds receives many questions through the phone hotline and online spill reporting. The following are some of the most commonly asked questions. If you have other questions, please feel free…

Did you know that the South OC Watershed Management Area provides collaborative water resource management services in the watersheds of South Orange County, which encompass a large portion of the 496…

The County and cities of south Orange County are subject to a municipal separate storm sewer system permit (MS4 Permit) issued by the San Diego Regional Water Board (Water Board) which regulates…

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The FEMA (Federal Emergency Management Agency) processing section of Engineering Support is responsible for submitting claims to the agency for damage to County public right-of-way that occurs during…

OC Public Works Operations and Maintenance handles all pothole repairs for all unincorporated areas within Orange County right of ways. Potholes can appear in various shapes and sizes on asphalt…