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…

The Orange County Flood Control District (OCFCD), established May 23rd , 1927 under authorization of the Orange County Flood Control Act, Chapter 723 of the State of California Statutes of 1927, was…

FEMA Flood Insurance Rate Maps (FIRM) Flood Insurance Rate Maps (FIRM), a.k.a. Flood Maps, can be viewed through the Federal Emergency Management Agency's (FEMA) Map Service Center. If you have…

As a public service to unincorporated areas, the County of Orange will provide the following information upon request: Whether a property is in or out of the Special Flood Hazard Area (…

Year Adopted: 1982 Supervisorial Districts: 3 & 5  Cities covered by El Toro Road Fee Program: Lake Forest and Mission Viejo Program Description Improve El Toro Road from…

OCPW  AFTER-HOURS PHONE NUMBERSBelow are phone numbers to reach OC Public Works teams for after-hours assistance:  Public roads, flood control channels and public right-of-way areas:  (714) 955-0200…