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Dissolved Oxygen Model of Lewisville Lake


Upper Trinity Regional Water District (UTRWD)


Denton County, TX


Water Quality Modeling


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.


Grapevine Lake Nutrient Modeling

Using the Water Quality Analysis Simulation Program (WASP), Plummer developed and calibrated a water quality model of Grapevine Lake.

Lavon Lake Water Quality Modeling – Total Dissolved Solids

Plummer developed a monthly water balance model of Lavon Lake and the NTMWD water supply system to support evaluation of different water supply and water treatment management options.

Lavon Lake Water Quality Modeling – TPDES Permitting Support

Plummer developed a CE-QUAL-W2 model of Lavon Lake to evaluate impacts on dissolved oxygen, nutrients and chlorophyll-a levels in the lake.

Dissolved Oxygen Model of Oso Bay

Plummer developed a dissolved oxygen model that couples the FREHD hydrodynamic code (Hodges, 2012) and EPA WASP 7 to simulate dissolved oxygen in Oso Bay.

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