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Description of Work The first major goal of this project is to characterize and evaluate the extent to which contaminants of emerging concern (CECs) threaten fish and other wildlife in the Great Lakes. This includes identifying and characterizing CECs in the Great Lakes Basin, identifying risk-based screening concentrations for priority CECs, evaluating population-relevant effects of complex mixtures on biota, and identifying the Great Lakes waterways at greatest risk. The second major goal of this project is to pilot and develop a short-term and an ongoing long-term state-of-the-art bioeffects surveillance program for the Great Lakes basin. This includes developing strategies which will account for variable conditions...
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Description of Work U.S. Geological Survey (USGS) scientists will conduct fish sampling in Indiana to determine the main causes of impairment of Pigeon Creek. The U.S. Environmental Protection Agency and Indiana State agencies will use the data to evaluate ways to improve water quality. Fish assemblage data is needed to develop total maximum daily loads and implementation plans for impaired AOCs and tributaries in the Basin. Development of the TMDLs will include determining the sources of the pollutant, calculating loading allocations to ensure the designated uses will be met, and developing an implementation plan to achieve these allocations. TMDLs will address several pollutants including nutrients, sediment and...
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Description of Work The USGS measures water levels at the adult Asian Carp barrier fence in Eagle Marsh and reports those data hourly to a USGS website. The barrier fence is an 8 foot tall, nearly 1,200 foot chain link fence across a part of Eagle Marsh. When flooding raises water levels at the fence, alerts are sent to State and local biologists and resource staff who respond and inspect the fence line for adult Asian Carp and debris accumulation. The USGS also measures streamflow and water temperature at two sites downstream from Eagle Marsh to evaluate how precipitation in area watersheds causes streamflow and water levels to increase and how temporary changes in flow directions downstream on Graham McCulloch...


    map background search result map search result map Data for Development of Watershed TMDLs in the Great Lakes Basin Data for Development of Watershed TMDLs in the Great Lakes Basin