Locust Grove Nature Center (Cabin John Creek)

Information sur la source

Friends of Cabin John Creek has trained volunteers (Creek Keepers) to monitor water quality at several locations in the Cabin John Creek Watershed, a sub-watershed of the Potomac. Monitoring occurs every other week from June through mid-September. Parameters to be monitored include levels of E.Coli, pH, and temperature. The samples are processed by the Anacostia Riverkeeper water quality lab. The primary parameter of concern is E. coli, a fecal coliform. E. coli is measured in terms of the Most Probable Number /100 ml water and high levels are an indicator of fecal contamination by warm-blooded animals like dogs, birds, and mammals. The MD Primary Contact Water Quality Standards are as follows: * E. coli single sample value = 410 MPN/100mL * E. coli geometric mean = 126 MPN/100mL The Cabin John Creek is rated against these values. * PASS indicates the E. coli single sample value is less than or equal to 410 MPN/100mL. * FAIL indicates bacteria counts of over 410 MPN/100mL.