Have questions about estate planning? Orange County’s Office on Aging educates, empowers, and supports older adults in Orange County. A presentation will be given on the topic of estate…

A TMDL (Total Maximum Daily Load) is defined in federal regulations as “the sum of the individual waste load allocations for point sources and load allocations for nonpoint sources and natural…

The County, cities, and water/special districts located within the Orange County and San Diego Regional Water Board boundaries have been meeting since 2003 in an effort to work together on water…

The County and cities of south Orange County are subject to a municipal separate storm sewer system permit (MS4 Permit) issued by the San Diego Regional Water Board (Water Board) which regulates…

Access and download critical data and PDF files from the navigation menu.State of the Environment ReportsSurface Water Quality Infrastructure Report CardFederal AgenciesOC Watersheds Grand…

Below is the Stormwater Program Effectiveness Assessment (PEA) for the County of Orange/Orange County Flood Control District (County), for the 2016-17 reporting period (July 1, 2016 - June 30,…

Table of Contents: [Santa Ana Region] Acronyms Executive Summary Certification Page: [Santa Ana Region] Section C-1: Introduction Section C-2: Program Management Section C-3…

OC Public Works, on behalf of the municipalities of South Orange County Watershed Management Area (South OC WMA), has initiating the Flow Ecology Special Study as identified in the Water Quality…