Water-Quality Evaluation of a Lower Pool Elevation for Proposed Arcadia Lake, Oklahoma.

This study evaluated the water quality of the proposed Arcadia Lake at the lower pool elevation, 305 m msl, and supplemented the principal report, Arcadia Lake Water-Quality Evaluation, conducted at pool elevation 311 m msl. The water quality of the proposed Arcadia Lake at the lower pool elevation was investigated using a version of the reservoir portion of the water Quality for River-Reservoir Systems WQRRS ecological model. Although other water-quality constituents were simulated, the study concentrated on temperature, dissolved oxygen, and coliform bacteria concentrations. Chemical and biological model coefficients and meteorological, streamflow, physical, chemical, and biological model updates for study years 1970 and 1973 were identical to those used in the principal study. The reservoir was predicted to thermally stratify intermittently during the spring and summer months, but in general was isothermal at the lower pool elevation. Project purposes of flood control, municipal and industrial water supply, and general recreation are expected to be met by the predicted water quality for the proposed Arcadia Lake.