Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Implications of Climate Change for the Water Balance of the Columbia River Basin, USA.
Author Marks, D. ; King, G. A. ; Dolph., J. ;
CORP Author ManTech Environmental Technology, Inc., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
Publisher c27 Jul 93
Year Published 1993
Report Number EPA-68-C8-0006; EPA/600/J-94/132;
Stock Number PB94-159365
Additional Subjects Columbia River Basin ; Water balance ; Climatic change ; Air-biosphere interactions ; Runoff ; Precipitation(Meteorology) ; Hydrology ; Soil water ; Evapotranspiration ; Environmental impacts ; Regional analysis ; Mathematical models ; Sensitivity analysis ; Reprint ; Pacific Northwest(United States)
Library Call Number Additional Info Location Last
NTIS  PB94-159365 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/01/1994
Collation 13p
Here the authors summarize application of a spatially distributed water balance model that was tested using historical data from the U.S. portion of the Columbia River Basin in the Pacific Northwest for a very dry (1977) and very wet (1972) water year. The model adequately partitions incoming precipitation into evapotranspiration and runoff. Because precipitation in the basin is underestimated from measured data, modeled runoff is less than measured runoff from the basin during both the wet and dry years. The predicted future climate conditions significantly increase potential evapotranspiration, causing a 20% reduction in runoff relative to input precipitation, and a 58% reduction in soil moisture storage. If these changes in regional water balance are realized, the distribution and composition of forests in the Northwest would change markedly, and water resources would become more limited. (Copyright (c) Inter-Research 1993.)