In a presentation at the California Stormwater Quality Association (CASQA) quarterly meeting on July 15, 2021, the OC Stormwater Program shared how data from a number of sources is enabling the…

These reports, prepared as part of the Reports of Waste Discharge (ROWDs) submitted near the end of 4th term MS4 Permits for Orange County, represents a commitment to present a…

South OC Municipalities Prepare and Submit the First WQIP Annual Report The County of Orange and municipalities of south Orange County have prepared and submitted to the San Diego Regional…

OC Watersheds receives many questions through the phone hotline and online spill reporting. The following are some of the most commonly asked questions. If you have other questions, please feel free…

A number of documents are available on these pages that describe the regulations and programs aimed at preventing and controlling the discharge of pollutants to the municipal stormdrain system and…

Below is the Santa Ana Regional Board jurisdictional Stormwater Program Effectiveness Assessment (PEA) for the County of Orange/Orange County Flood Control District (County), for the 2017-18…

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

On behalf of the South Orange County Watershed Management Area Integrated Regional Water Management (SOCWMA IRWM) Group, you are invited to attend the fourth meeting of the Aliso Creek Watershed…

The County of Orange and municipalities of south Orange County have prepared and submitted to the San Diego Regional Water Quality Control Board on January 30, 2020, a South…

The County of Orange and municipalities of south Orange County have prepared and submitted to the San Diego Regional Water Quality Control Board on January 30, 2020, a South OC Water Quality…