Coupling upland watershed and downstream waterbody hydrodynamic and water quality models (SWAT and CE-QUAL-W2) for better water resources management in complex river basins |
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Authors: | B Debele R Srinivasan J-Y Parlange |
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Institution: | (1) Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY 14853, USA;(2) Spatial Sciences Laboratory, Texas A&M University, College Station, TX 77845, USA;(3) 8750 Georgia Av #802B, Silver Spring, MD 20910, USA |
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Abstract: | Effective water resources management programs have always incorporated detailed analyses of hydrological and water quality
processes in the upland watershed and downstream waterbody. We have integrated two powerful hydrological and water quality
models (SWAT and CE-QUAL-W2) to simulate the combined processes of water quantity and quality both in the upland watershed
and downstream waterbody. Whereas the SWAT model outputs water quality variables in its entirety, the CE-QUAL-W2 model requires
inputs in various pools of organic matter contents. An intermediate program was developed to extract outputs from SWAT at
required subbasin and reach outlets and converts them into acceptable CE-QUAL-W2 inputs. The CE-QUAL-W2 model was later calibrated
for various hydrodynamic and water quality simulations in the Cedar Creek Reservoir, TX, USA. The results indicate that the
two models are compatible and can be used to assess and manage water resources in complex watersheds comprised of upland watershed
and downstream waterbodies. |
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Keywords: | CE-QUAL-W2 hydrodynamic model model integration waterbody water quality model |
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