HR: 1340h
AN: H23C-1433    [Abstracts]
TI: Modeling of the Water Balance of a Small Mountainous Catchment
AU: * Kelleners, T J
EM: tkelleners@cc.usu.edu
AF: Utah State University, Dep. Plants, Soils, and Biometeorology, Logan, UT 84322 United States
AU: Chandler, D G
EM: david.chandler@usu.edu
AF: Utah State University, Dep. Plants, Soils, and Biometeorology, Logan, UT 84322 United States
AU: Seyfried, M S
EM: mseyfrie@nwrc.ars.usda.gov
AF: USDA-ARS, 800 Park Blvd, Boise, ID 83712 United States
AU: McNamara, J P
EM: jmcnamar@boisestate.edu
AF: Boise State University, Dep. of Geosciences, boise, ID 83725 United States
AB: A new model is being developed to describe the water balance of a small mountainous catchment that is subject to snow accumulation and snow melt. Surface elevation across the catchment is determined from a digital elevation model. The distributed water storage capacity is calculated by combining depth-to-bedrock data with soil porosity data. At the surface, the complete energy balance is calculated using standard meteorological input. The snowpack, if present, is represented by two state variables: water equivalence and energy content (similar to the Utah Energy Balance Snow Accumulation and Melt Model). Lateral subsurface flow above the bedrock is calculated using the Boussinesq equation. Saturation-excess surface runoff is moved to neighboring cells assuming instantaneous redistribution. The model is tested in the Boise Front Experimental Watershed, Boise, Idaho.
DE: 1804 Catchment
DE: 1812 Drought
DE: 1814 Energy budgets
DE: 1818 Evapotranspiration
DE: 1863 Snow and ice (0736, 0738, 0776, 1827)
SC: Hydrology [H]
MN: Fall Meeting 2005