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ALGAE BLOOMS AND PHOSPHORUS LOADING IN LAKE LOWELL, IDAHO
Description:
Algae blooms limit recreational use of Lake Lowell, ID (17050114) by reducing water clarity and esthetic qualities. Under bloom conditions, algae have a negative impact on the reservoir fishery because of periodic oxygen depletion associated with respiration and decomposition. Fecal coliform bacteria counts occasionally exceed ID Water Quality Standards for primary contact recreation waters. Data collected in this study were used to derive estimates of phosphorus imports to Lake Lowell associated with ungaged inflows and waterfowl. Predictive studies based on revised estimates of annual phosphorus loading indicate that some reduction in lake phosphorus concentrations could be accomplished by 1) reducing irrigation season inflows to the reservoir, 2) flushing the lake with Lucky Peak reservoir releases during the nonirrigation season, or 3) chemically removing phosphorus from the reservoir. Water and Power personnel collected monthly chemical data from the New York Canal inflows to Lake Lowell in the years 1972-1975, and 1978; the Deer Flat Low Line outflow was sampled in the years 1971-1975 and 1978. David W. Zimmer and J. Eric Glover. 1980. Water and Power Resources Service, Pacific Northwest Region, Boise, ID. 31 pp.