Computer simulation of watershed runoff and sedimentation processes
Conference
·
OSTI ID:56920
- Water Engineering and Technology, Inc., Fort Collins, CO (United States)
Mathematical modeling of watershed sediment production and determination of downstream impact can often be complex and tedious. A watershed runoff and sedimentation modeling program, Erosion And Sedimentation Impacts (EASI) has been developed to aid in the analysis and development of various erosion and sedimentation control practices. It combines a sophisticated watershed modeling program with a user-friendly interface. EASI can be used to represent and analyze a complex watershed as a network of hillslopes, subwatersheds, channels and ponds, each with uniquely identified soil, rainfall, management and topography or geometry. EASI calculates the runoff and sediment yield for each hillslope or non-point source area, determines the sediment transport capacity for the channels and trap efficiency for ponds, and deposits excess sediment or scours channels when a sediment deficit exists. By analyzing erosion and sediment transport processes throughout the catchment, the model addresses non-point source areas and potential impacts throughout the channel network. EASI has been used in surface mine reclamation activities and in the analysis of non-point source pollution from agricultural land. It provides regulatory personnel and reclamation managers with a tool to predict and assess the impacts of various land treatments and agricultural practices. The model has been calibrated with data collected from rainfall simulation plots and has been tested with data from agricultural, undisturbed and reclaimed instrumented watersheds. Results of these analyses are presented.
- OSTI ID:
- 56920
- Report Number(s):
- CONF-9003298--
- Country of Publication:
- United States
- Language:
- English
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