HR: 0800h
AN: H41D-0438    [Abstracts]
TI: The Effect of Land use/Land Cover Change on Hydrologic Properties in the Southern Willamette Valley, Oregon
AU: * Mutti, G
EM: muttij@geo.oregonstate.edu
AF: Oregon State University, Dept. of Geosciences, Wilkinson 104, Corvallis, OR 97331 United States
AU: Haggerty, R
EM: haggertr@geo.oregonstate.edu
AF: Oregon State University, Dept. of Geosciences, Wilkinson 104, Corvallis, OR 97331 United States
AB: The Willamette Valley of Oregon is the state's most prosperous region in terms of agriculture and timber assets, yet is also expected to nearly double in population within the next 50 years. These competing interests make it important for land managers to understand the likely impacts due to land use/land cover (LU/LC) change. In this study, the model SWAT (Soil and Water Assessment Tool) is used to examine how different development trends in the Southern Willamette Valley may impact the future generation of stream flow, groundwater recharge, nitrate leaching, and evapotranspiration. SWAT was first calibrated and validated using recent climatic, LU/LC, and hydrograph data, while the future scenarios were then loaded and evaluated, using the same initial input data except for LU/LC. The three future LU/LC scenarios examined include high intensity development, conservation, and projected current trends (all for the year 2050). Relative differences between scenarios and their degree of change from current conditions are evaluated.
DE: 1834 Human impacts
DE: 1847 Modeling
SC: Hydrology [H]
MN: Fall Meeting 2005