Incorporating variable source area hydrology into GAMES model
Authors: Panjabi, K., N. Allataife, R. Rudra, P. Goel
Description: Guelph model for evaluating effects of Agricultural Management systems on Erosion and Sedimentation (GAMES) predict soil erosion and sediment transportation using conventional infiltration excess response to rainfall concept. However, for the areas dominated by a saturated excess runoff mechanism, this model may not be able to predict the correct locations of runoff generating areas and corresponding critical erosion prone areas. This paper focuses on modification of the GAMES model in a way consistent with VSA hydrology by incorporating the Topographic Wetness Index (TWI).The modified GAMES-VSA model estimates soil erosion and delineates erosion prone areas based on TWI that categorises each cell of the watershed according to its susceptibility for becoming saturated and generating saturation excess surface runoff. The developed model has good potential for applications in agricultural watersheds to develop strategies to minimize the pollutant loads to the surface water bodies by accurately predicting the locations of critical erosion prone areas for application of best management practices.
Keywords: GAMES model; Soil erosion; Saturation excess runoff; Variable source area hydrology; Topographic wetness index
Conference name: CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Session name: Session 1A: Water Management I
Citation: Panjabi, K., N. Allataife, R. Rudra, P. Goel . 2016. Incorporating variable source area hydrology into GAMES model. CSBE/SCGAB 2016 Annual Conference, Halifax, 3-6 July 2016.
Publisher: Canadian Society for Bioengineering
Language 1: en
Rights: Canadian Society for Bioengineering