Watershed Protection Division -
Sampling and Water Quality Monitoring
In 2009, Storm Water Management Authority, Inc. contracted with the JCDH Watershed Protection Division to provide storm water sampling throughout the member cities. The sampling program employed by JCDH encompasses many different components such as effectiveness of construction storm water Best Management Practices (BMPs) on active construction sites, illicit discharge detection and elimination, water quality analysis for all creeks and rivers, pollution prevention education, and 303(d) impaired stream monitoring.
JCDH conducts monthly and quarterly sampling for a wide variety of parameters that include turbidity, dissolved oxygen, conductivity, temperature, pH, fecal coliform, total dissolved solids, and nitrogen. Routine turbidity samples are conducted monthly to reveal trends in sedimentation to the major creeks and rivers. Excessive pollutant loadings can lead to a loss of fish and wildlife habitat, negative effects on recreational water use, human health hazards, and/or higher water treatment costs.
JCDH conducts five types of monitoring:
1. Wet Weather- samples that are taken within six hours after a 0.1 inch rain event has occurred.
2. Dry Weather- samples that are taken 48-72 hours after a rain event.
3. Turbidity- samples that are taken both wet and dry for the purpose of sediment loading in creeks and streams.
4. Characterization- a sample that is used to provide characteristic traits of different runoff types.
5. Bioassessments- measures water quality's impact on aquatic species, specifically fish.