Abstract
ABSTRACT In the 1975 National Eutrophication Survey Bear Lake had the best overall water quality of all Utah lakes sampled. However, this oligotrophic state would not be retained because of a mesotrophic level of loading. Because of the unique characteristics of the Bear Lake ecosystem and the present danger of cultural eutrophication, the objectives of this 314 Clean Lakes Study were to: (1) quantify the major nonpoint sources of nitrogen and phosphorus into Bear Lake; (2) quantify the major sources of nitrogen and phosphorus in the Bear River prior to its diversion into Dingle Marsh and Bear Lake; (3) determine the nitrogen, phosphorus, and carbon budgets of Dingle Marsh and define the factors which may regulate the flux of these nutrients into Bear Lake; and (4) if necessary, develop a set of viable cost-effective alternatives for the reduction of the nitrogen and phosphorus loading into Bear Lake. Nutrient loading was determined for each major tributary to Bear Lake and the trophic condition of the la...
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