Dissolved Oxygen Model of Lewisville Lake

CLIENT NAME

Upper Trinity Regional Water District (UTRWD)

LOCATION

Denton County, TX

PRACTICE AREA

Water Quality Modeling

SERVICES INCLUDED

Reservoir Modeling

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Using the EPA’s Water Quality Assessment Simulation Program (WASP), Plummer developed an advanced water quality model of Lewisville Lake to support a TPDES permit renewal for the Lakeview Regional Water Reclamation Plant. The depth-averaged, 2-D model contained 10-acre computational cells and accounted for mixing and dispersion of the treated effluent discharge to the lake. Plummer used the model to identify discharge flowrates and effluent water quality limits that are projected to maintain the dissolved oxygen standard in Lewisville Lake. We wrote a modeling technical memorandum that was submitted as part of the TPDES permit application, answered TCEQ questions about the model, and assisted UTRWD in obtaining the discharge permit.

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