In this section you will find informational resources including online maps, reports, manuals, and links to County Standard Plans and other government resources. Reference Materials (in PDF format)…

The proposed 54-inch-diameter pipeline will tie into the existing SARI Line just upstream of the existing metering station at the Green River Golf Club. The pipeline will then cross the golf course…

 OC Infrastructure Programs manages OC Public Works' Road and Bridge, Flood, and Bikeway Projects approved by the County of Orange Board of Supervisors and listed in the 7-…

IMPORTANT UPDATE:For information about removal of citrus trees on flood control property, see Citrus Orchard section below.Where is the Santa Ana River Canyon Habitat Area? The Santa Ana River…

Introduction The Santa Ana River Mainstem Project is designed to provide flood protection to the growing urban communities in Orange, Riverside and San Bernardino Counties . The proposed…

The San Juan Creek Flood Risk Management Feasibility Study is a joint study between the United States Army Corps of Engineers and the Orange County Flood Control District. The purpose of this…

USACE LA District Debris Yield Los Angeles District Method for Prediction of Debris YieldFebruary 1992 - Updated February 2000 In this section…

 Thank you for your interest in the upcoming Santa Ana-Delhi Channel Improvement Project. Join us for a community open house on Monday, July 24, 2023, from 5-7 p.m. at the Muth Interpretive…