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Creator:: Onions, C. A. and Douglas County (Or.)
Abstract:: This report presents tables of suspended-sediment data collected from 1956 to 1967 at 10 sites in the Umpqua River basin. Computations based on these data indicate that average annual suspended-sediment yields at these sites range from 137 to 822 tons per square mile. Because available data for the Umpqua River...
Resource Type:: Technical Report
Full Text:: Resources Division SEDIMENT TRANSPORT IN STREAMS IN THE UMPQUA RIVER BASIN, OREGON By C. A. Onions

Creator:: Rinella, Frank A., Geological Survey (U.S.), United States. Forest Service, and Douglas County (Or.)
Abstract:: This report presents the concentrations of major ions, nutrients, and trace elements in water and bottom sediments collected in the four-tributaries during the low-flow condition of September 9-13, 1996. Stream-water chemistry results are contrasted, and trace-element concentrations compared with U.S. Environmental Protection Agency chronic aquatic life toxicity criteria. Bottom -sediment...
Resource Type:: Technical Report

Creator:: Ratti, Frank D. (Frank Douglas), Kreag, Rebecca A., and Oregon. Dept. of Fish and Wildlife. Research and Development Section
Resource Type:: Technical Report

Creator:: Jackson, Aaron D., Hatch, Douglas R., Close, David A., Li, Hiram W., Confederated Tribes of the Umatilla Indian Reservation in Oregon., Columbia River Inter-Tribal Fish Commission., and Oregon Cooperative Fishery Research Unit
Abstract:: Based on oral interviews with tribal informants, current and former state and federal fisheries personnel, review of records and literature, and presence/absence sampling, it is apparent that Pacific lamprey were once abundant in ceded area streams of the Umatilla Indian Reservation (John Day, Umatilla, Walla Walla, Tucannon, and Grande Ronde...
Resource Type:: Technical Report
Full Text:: R. Hatch, Blaine L. Parker, Columbia River Inter-Tribal Fish Commission, David A. Close, Martin S

ScholarsArchive@OSU