Watershed Analysis Reports

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Watershed analyses evaluate the effect of forest management practices on a watershed's physical and biological processes.

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Umatilla and Meacham ecosystem analysis and Upland forest vegetation analysis: Umatilla and Meacham watersheds
(2001-04) Umatilla National Forest (Agency : U.S.); Powell, David C.
Ecosystem analysis finds the watersheds are a critical source of relatively cool water for the entire Umatilla Subbasin, the Umatilla River and Meacham Creek provide some areas of relatively high quality conditions for remnant and recovering fish populations, bull trout populations are at risk because of their small population and limited satisfactory habitat with less than ideal water temperature conditions, coldwater source protection may conflict with high priority vegetation management activities, overstocked stands with dense understories invite wildfires, a high risk of infestation exists from western spruce budworm and Douglas-fir tussock moth, and ten native plant species are at risk. Vegetation analysis describes the potential vegetation, cover types, size classes, structural stages, density (canopy cover), and disturbance processes. Also includes the historical range of variability for forest structural stages, consideration of limited vegetation components, and an assessment of and suggestions for stocking levels for various tree species.