Grapevine Lake Nutrient Modeling

Using the Water Quality Analysis Simulation Program (WASP), Plummer developed and calibrated a water quality model of Grapevine Lake. As a first step in developing the model, we acquired and managed historical water quality data from several sources, including rainfall, evaporation, reservoir water surface elevation, and nutrient, BOD, dissolved oxygen, and chlorophyll-a concentrations. Then, we analyzed lake bathymetry, created model segments, and constructed the WASP model. During model calibration, we identified relationships between the water quality data and biological and chemical processes operating in the lake. Finally, we used the model to assess eutrophication trends, investigate the potential impacts of wastewater discharges and urban development, and develop recommendations for future management strategies.