The Unincorporated Orange County Stormwater Program works to keep pollution out of our flood control channels, creeks, rivers and ocean. The County is regulated by two separate Municipal Stormwater…

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: …

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…

Through the City Engineers Flood Control Advisory Committee (CEFCAC) process, flood control projects are selected and slated into a long range plan. The Orange County Flood Control District (OCFCD)…

A100-Year (or Base) Flood:A flood event that statistically has a 1 out of 100 (or one percent) chance of being equaled or exceeded on a specific watercourse in any given year. The base flood is the…

Through the City Engineers Flood Control Advisory Committee (CEFCAC) process, flood control projects are selected and slated into a long range plan. The Orange County Flood Control District (OCFCD…