In this section you will find informational resources including online maps, reports, manuals, and links to County Standard Plans and other government resources.
Master Plan of Arterial Highways (MPAH): Find links to the Orange County Transportation Authority’s Road Master Plan, covering freeways, arterial highways and local streets
Orange County Local Drainage Manual:Find computational techniques and criteria for estimation of drainage runoff, discharge and the design of drainage systems built for dedication to the Orange County Flood Control District
Orange County Flood Control District Design Manual: Find computational techniques and criteria for estimation of drainage runoff, discharge and the design of drainage systems built for dedication to the Orange County Flood Control District
Caltrans Standard Plans: Find links to County, other governmental and non-governmental Standard Plans & Specifications.
Orange County Traffic Flow Map: Find detailed map of County streets, toll roads and State freeways showing daily traffic volumes
Orange County Traffic Manual: Find a compellation of specific guidelines staff utilize when conducting traffic safety investigations
