Several of these manuals are available both in their entirety and broken down into sections for easier downloading.Title Computer Aided Design (CAD) Standards Manual (Version 1.0 - January 2023)…

Homeowners’ Guide for Post-Fire Flood, Debris, and Erosion Control We know from past experience that burn areas are especially susceptible to damage from flooding, and mud and debris flows that…

Dates shown are week of stocking. Schedule is subject to change and will be updated as available.California Fishing License required age 16+ at all parks besides Irvine Lake.Week of March 16-20…

Search by Location To verify if a particular address falls within an OC Road Fee Program, please visit the Geographic Information System (GIS) web map application atlightbulb ocgis.…

Year Adopted: 1981 Year Closed: 2020 Supervisorial Districts: 3 & 5  Cities covered by Plano Trabuco Road Fee Program: Rancho Santa Margarita Program Description…

Geotechnical Design Report Revised Aerially Deposited Lead Report Material Report Aerial Deposited Lead Report

The Santa Ana River and its shoreline are home to numerous threatened or endangered species, including the Santa Ana sucker, the least Bell's vireo, the southwestern willow flycatcher, and the…

1. What is the OC Loop?The Orange County (OC) Loop is a vision for 66 miles of seamless connections and an opportunity for people to bike, walk, and connect to some of California’s most scenic…

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…

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)…