H087-0028
Modelling runoff-erosion processes under post-fire conditions

Thursday, 10 December 2020
Poster
Nawa Raj Pradhan1, Ian Eli Floyd2, Jang Pak3, Markus Berli4, Li Chen4, Francisca Olmos de Aguilera5, Jose Paredez6 and Nikolas Ortman6, (1)US Army Corps of Engineers, Engineer Research and Development Center, Coastal and Hydraulics Laboratory, Jacksonville, FL, United States, (2)US Army Corps of Engineers, Engineer Research and Development Center, Coastal and Hydraulics Laboratory, US Army, Vicksburg, MS, United States, (3)U.S. Army Corps of Engineers, Institute For Water Resources, Hydrologic Engineering Center, Davis, CA, United States, (4)Desert Research Institute, Las Vegas, NV, United States, (5)Florida International University, College of Engineering and Computing,, Miami, FL, United States, (6)U.S. Army Corps of Engineers, Los Angeles District, Los Angeles, CA, United States
Abstract:
Research and development of a watershed’s physics-based distributed runoff-erosion processes is needed to better predict discharge and erosion under different environments. This is important for not only long-term local floods and droughts and, geomorphological and landform changes point of view but also for a better understanding of the hydrology, erosion and land surface processes and its impact on ecosystem, transport system, environment and socio-economy and safety. Land use change, as well as changes in the soil physical and chemical properties impact the runoff and erosion generation processes, and overall transport mechanism. One of the natural and/or manmade causes that brings about such changes in land use and soil property is wildfires. In an effort to represent the physics of the watershed under post-fire conditions, this study presents a detailed modelling analysis of runoff and erosion generation processes and transport mechanisms in watersheds under burn conditions.
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