Abstract
The seasonal incidence and occurrence of indicator organisms and pathogens were studied at four sites in the Rhode River, a subestuary of Chesapeake Bay. The highest frequency of occurrence of total and fecal coliforms and fecal streptococci was in Muddy Creek, a marsh area receiving pasture land runoff. Second highest frequency of occurrence of these bacteria was in Cadle Creek, a populated area. Lowest measurements of these parameters were obtained at stations in the central portion of the Rhode River. No Salmonella spp. were detected by the methods employed in this study. However, it is concluded that if these organisms are present, the concentrations are less than or equal to 1 organism per liter. The presence of Clostridium botulinum was detected in 12% of the samples tested.
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