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Main Title An evaluation of the effects of anthropogenic activity on streamflow in the Columbia River Basin /
Author Kirschbaum, Robin L. ; Lettenmaier, D. P.
Other Authors
Author Title of a Work
Lettenmaier, Dennis P.
CORP Author Washington Univ., Seattle. Dept. of Civil Engineering.;Environmental Protection Agency, Washington, DC.
Publisher Washington University, Dept. of Civil Engineering,
Year Published 1997
Report Number SER/TR-156; WATER RESOURCES SER/TR-156
Stock Number PB99-115479
Subjects Streamflow--Columbia River Watershed ; Plant ecology--Columbia River Watershed
Additional Subjects Columbia River Basin ; Stream flow ; Man environment interactions ; Vegetation ; Forests ; Ecological succession ; Root distribution ; Root systems ; Hydrologic models ; Hydrograph analysis ; Parameters ; Scenarios ; Washington
Library Call Number Additional Info Location Last
NTIS  PB99-115479 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vii, 146 leaves : illustrations (some color) ; 29 cm
The primary objective of this study was to evaluate the macroscale hydrologic effects of anthropogenic changes in vegetation on streamflow. This was accomplished by comparing streamflow predictions based on current and historical vegetation scenarios. The historical frame of reference was the early 1900's and the current frame of reference was the 1990's. Changes in vegetation were represented by the assignment of vegetation parameters extracted from spatial maps of current and historical vegetation type and structural stage, where structural stage is analogous to the condition and/or successional stage of forest stands. The secondary study objective was to assess the sensitivity of predicted changes in streamflow to the specification of vegetation parameters, such as vegetation rooting depth. The model parameter which controls the vertical root distribution profile was varied in small increments as a function of structural stage and the resulting predicted current and historical scenario monthly hydrographs were compared.
"Water Resources Series, Technical Report No. 156." Includes bibliographical references. "September 1997." "PB99-115479." Microfiche.