Browsing by Subject "pollution control"

Now showing 1 - 6 of 6
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    Eagle Lake Pollution Control Project
    (Water Resources Research Center, University of Minnesota, 1976-08) Abbott, Robinson S.; Grohs, Roy J.; Holt, Robert F.; Latterell, Joseph J.; Nord, Bruce A.; Straw, Thomas E.; Timmons, Donald R.
    This report describes the cooperative efforts that a lake community and several governmental agencies undertook to alleviate increasing cultural eutrophication in Eagle Lake, Kandiyohi County, Minnesota. Two non-point nutrient sources were identified: agricultural runoff and domestic sewage. A lake-encircling collection line now diverts the sewage to a treatment plant. Earthen dams with soil absorption fields have been tested as a means of removing nutrients from part of the watershed runoff. Coincident with initiation of these anti-pollution measures, a comprehensive research project was initiated. Detailed studies of the chemical, physical, and biological conditions in the lake were conducted before the sewage system was completed. Water and nutrient budget estimates have been made. Eagle Lake can be classified as moderately eutrophic. Socio-economic surveys of lakeshore residents, other watershed residents, and non-resident ice fishing users resulted in a base line data profile of recreation use of Eagle Lake and of attitudes toward the lake and toward the anticipated improvements. Hopefully these data will suggest a model of community action. These benchmark studies, while of intrinsic interest, will reach their ultimate utility as a reference for comparison with conditions in the watershed after the pollution control measures have been in operation. Such further studies are anticipated.
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    Eagle Lake Pollution Control Project: Assessment of Lake Improvement
    (Water Resources Research Center, University of Minnesota, 1979-06) Latterell, Joseph J.; Abbott, Robinson S.; Straw, Thomas E.; Van Alstine, James B.; Myette, Charles F.
    In this study of the response of Eagle Lake, Kandiyohi County, MN, to the removal of septic effluent, detailed studies of the biological, chemical, sedimentological, hydrological and physical conditions in the lake were conducted. Comparisons of the data collected in this fifth year study were made with benchmark data. An annual hydrologic budget for Eagle Lake was prepared for the 1978 water year. Results show that the amount of water that flowed through Eagle Lake in the 1978 water year was 6,719 acre-feet. Inflow to the lake comprised 45 percent surface water, 22 percent groundwater, and 33 percent precipitation. Water out of the system comprised 72 percent surface water, less than 1 percent groundwater, 25 percent evaporation, and slightly greater than 2 percent net change in lake storage. Several observations give evidence of an improvement in the quality of Eagle Lake waters after the installation of a peripheral sewage collection line. One such observation is the decrease in total nutrient loads of nitrogen and phosphorus at the spring turnover 1978. However, increases in the phytoplankton biomass and the shifts in the most abundant species with the Blue-Green algae assuming dominance do no t indicate an improvement in water quality. The interpretation of our observations has been compiled by the increased nutrient load of the surface water inlets, especially that which resulted from unseasonably heavy rains flushing large quantities of nutrient rich and biologically active waters stored behind a beaver dam during weeks 24 to 28, 1978.
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    Reaney Feasibility Study.
    (2002) Berglund, Nina; Chatfield, Nathan; Johnson, Andy; Marohn, Chuck; Martin, Marcus; Millet, Eduardo
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    Research and Development in Industrial Corporations: Can Advanceed Societies Learn to Contain Pollution?
    (Water Resources Research Center, University of Minnesota, 1973-08) Rickson, Roy E.
    The development and distribution of knowledge has long been of interest to policymakers and social scientists. Because of the power of industrial corporations and the influence they have over the general research and development process, societies have the knowledge to deal with problems that coincide with corporate goals but have difficulty handling problems where solutions are, in the short run, contradictory to the uninterrupted pursuit of economic goals. A good example is societal ability to deal with waste or pollution. Two processes are important: (1) the process by which resources are allocated to research at the corporate and societal level and (2) the management of the expert role by the organizations.
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    SECIA - Environmental Inventory.
    (2002) Da Gama Rose, Mark-Anthony