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Nutrient Tmdl for an Urban Lake

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Lakeside Lake is a small urban impoundment located in Tucson, Arizona. To maintain the water level in the area's high evaporation, runoff inflows must be supplemented with both groundwater and reclaimed or treated wastewater. At times the reclaimed water nutrient load resulted in high phytoplankton concentrations and undesirable water quality conditions, and this triggered action through the Arizona Department of Environmental Quality's (ADEQ) Total Maximum Daily Load program. This paper describes the TMDL development process that has resulted in an effective reservoir water quality management program. This has included monitoring, modeling with CE-QUAL-W2, and implementing a program of alum use to manage the effects of nutrients when using reclaimed water.


Document Type: Research Article


Publication date: 2007-10-01

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