Reading the FIRM
FIRM Instructions To get access to the FEMA Flood Insurance Rate Maps (FIRM), click here. To find a flood map for a specific address or landmark, you may type an address in…
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Reference Materials
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)…
Project Alignment
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…
San Juan Creek Flood Risk Management Feasibility Study
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…
References
USACE LA District Debris Yield Los Angeles District Method for Prediction of Debris YieldFebruary 1992 - Updated February 2000 In this section…
Santa AnaDelhi Channel Improvement Project
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…
Roadways Bridges and Traffic
Core Services One of the County’s primary objectives is to provide our community with a safe and efficient unincorporated roadway system through the planning, design, construction and maintenance…
Santiago Canyon Road Safety Improvements Project
Based on traffic accident data along Santiago Canyon Road and field evaluations by traffic engineering experts, OC Public Works has been working on a series of various safety measures to enhance the…