Data from water quality and other environmental monitoring efforts is summarized and analyzed on an annual basis in Section 11 of the Orange County Stormwater Program Unified Program Effectiveness Assessment (Unified PEA). The Unified PEA is finalized by November 15th of each year and covers a reporting period of July 1st through June 30th.
The 2013 Santa Ana Region State of the Environment Reportis also now available. This report represents our commitment to periodically present a comprehensive picture of the quality of Orange County’s creeks, rivers, bays and coastal waters and the actions being taken by the Orange County Stormwater Program (the Program) to protect and restore them.
Monitoring Data Portal:
To view OC Watersheds monitoring programs, sample locations and water quality data - Click on the interactive map below. (For best performance- use Google Chrome or Mozilla Firefox browser to view map)
*For your convenience, OC Watersheds has provided a short demonstration video of how to use the interactive map and download the data through the following link:
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