Arcadia Lake Water-Quality Report Study. Summary Report.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MISS
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The water quality of the proposed Arcadia Lake, Oklahoma, was evaluated relative to water-quality criteria and standards appropriate for the project purposes. Study procedures included evaluation of existing data and previous studies of streams and lakes in the project area collection and evaluation of additional field data determination of available and limiting nutrients through algal bioassays establishment of relationships between stream discharges and loadings of nutrients, metals, and pesticides based on stream concentrations and land-use patterns application of various mathematical models and comparison of predicted or measured results with existing or proposed water-quality criteria. A comparison of average values for 70 water-quality parameters with the most stringent standard or criterion revealed that ammonia, manganese, mercury, DDT, dieldrin, aldrin, chlordane, lindane, heptachlor, PCB, phenols, and fecal coliforms equaled or exceeded permissible or recommended levels at least part of the time. Only coliform bacteria, ammonia, and manganese exceeded present Oklahoma standards applicable to proposed reservoir uses. Nutrient evaluation based on concentration and loading indicated that the proposed impoundment would be eutrophic and that algal blooms were likely to occur during the late spring and summer months. Manganese concentrations and occasionally iron concentrations are expected to exceed drinking water standards in the hypolimnion and headwaters of the proposed impoundment. Average mercury concentration computed over all samples collected near Arcadia was ten times less than the public water supply criterion but exceeded the criterion for the protection of freshwater aquatic life.
- Water Pollution and Control