The Stormwater Monitoring Program includes both stormwater management and scientific elements.  The collection and analysis of stormwater samples across Ventura County and the analysis and interpretation of the resulting data are the central activities of the Stormwater Monitoring Program.  The Stormwater Monitoring Program is currently conducted with the following four major objectives at its focus:

• Characterizing stormwater discharges from monitoring sites representative of different land uses - industrial, agricultural, and residential
• Establishing the impact of stormwater discharges on receiving waters by conducting receiving water quality, mass emission, and bioassessment monitoring
• Identifying pollutant sources based on analysis of monitoring data, inspection of businesses, and investigation of illicit discharges
• Defining stormwater program effectiveness using data collected before and after implementation of pollution prevention programs

Sampling results from previous sampling efforts, which includes stormwater and non-stormwater flows, bioassessment, and special studies are now available online. Analysis and discussion of these results is described in various reports produced by the Ventura County Watershed Protection District. To begin, click on a watershed below or visit the full list of sites.