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In the Matter of Formulating an Integrated, Coordinated Program for the Use and Control of the Water Resources of the Umpqua River Basin. Salem, Or., 1964.
Hearings on Proposed Withdrawal of the Unappropriated Waters of Roberts Creek, a Tributary of South Umpqua River. [Salem, Or.], 1959.
"Umpqua River basin." In State of Oregon Water Use Programs , 33 p. [Salem, Or.], 1978.
Oster, E. A.. Flood Profiles in the Umpqua River Basin, Oregon In Open-file report (Geological Survey (U.S.)). Vol. pts.1-3. Portland, Or: Unite States Department of the Interior, Geological Survey, Water Resources Division, Oregon District,, 1972.
Oster, Eugene A., and III Swift, C. H.. Channel Capacity and Flood Characteristics for Selected Reaches of Elk Creek and Tributaries, Douglas County, Oregon. Portland, Or.: U.S. Geological Survey, 1969.
Oster, Eugene A.. Floods on selected reaches of Elk Creek, Douglas County, Oregon [cartographic material] In Hydrologic Atlas. Vol. no.388. Washington, D.C.: U.S. Geological Survey, 1971.
Owens, Hazel L.. Relationships between Stream Discharge and Cutthroat Trout Abundance at Multiple Scales in Managed Headwater Basins of Western Oregon. M.S. ed. Corvallis, Or.: Oregon State University , 2013.
O’Connor, Jim E., Joseph F. Mangano, Daniel R. Wise, and Joshua R. Roering. "Eroding Cascadia—Sediment and solute transport and landscape denudation in western Oregon and northwestern California." Geological Society of America Bulletin 133 (2021): p.1851-1874.
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Rantz, S. E., Hofmann; Walter, and Geological Survey(U.S.). Floods of December 1955-January 1956 in far-western states: peak discharges In Geological Survey Circular. Washington, D.C.: U.S. Geological Survey, 1956.
Ratti, Frank(Frank Douglas) D.. Natural resources of Umpqua Estuary In Estuary Inventory Report. Vol. 2. Portland, Or.: Oregon Dept. of Fish and Wildlife, 1979.
Rinella, Joseph F., F. J. Frank, and A. R. Leonard. Evaluation of water resources in the Reedsport area, Oregon In Open-File Report (Geological Survey (U.S.)). Vol. no.80-444. [Reston, Va.?]: U.S. Geological Survey, 1980.
Rinella, Frank A., U.S. Geological Survey, U.S. Forest Service, and Douglas County. Major-ion, nutrient, and trace-element concentrations in the Steamboat Creek Basin, Oregon, 1996 In Water-Resources Investigations Report. Portland, Or.: U.S. Geological Survey, 1998.
Rinella, Joseph F.. Analysis of fixed-station water-quality data in the Umpqua River Basin, Oregon In Water-Resources Investigations Report. Vol. no. 85-4253. Portland, Or: U.S. Dept. of the Interior, Geological Survey, 1986.
Risley, John C.. Floods of November 1996 through January 1997 in the Umpqua River basin, Oregon In Fact Sheet (Geological Survey (U.S.)). Portland, Or: U.S. Geological Survey, 2004.
Rodnick, Kenneth J., Sophie St.-Hilaire, Pavan K. Battiprolu, Steven M. Seiler, Michael L. Kent, Madison S. Powell, and Joseph L. Ebersole. "Habitat selection influences sex distribution, morphology, tissue biochemistry, and parasite load of juvenile coho salmon in the West Fork Smith River, Oregon." Transactions of the American Fisheries Society 137 (2008): p.1571-1590.
Roper, Brett B., and Dennis L. Scarnecchia. "Observer variability in classifying habitat types in stream surveys." North American Journal of Fisheries Management 15 (1995): p.49-53.
Roth, A. R.. A Survey of the Waters of the South Umpqua Ranger District: Umpqua National Forest. Portland, Or.: USDA Forest Service, Pacific Northwest Region, 1937.
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Seidl, M. A., and W. E. Dietrich. The problem of channel erosion into bedrock In Functional Geomorphology: Landform Analysis and Models: Festschrift for Frank Ahnert. Vol. 23. Catena. Supplement. 23., 1992.
Shelby, B., D. Whittaker, and J. Roppe. "Controlled flow studies for recreation: a case study on Oregon's North Umpqua River." Rivers 6 (1998): p.259-268.
Shirzad, Farzad F., and United States. Ocean Assessments Division. Strategic Assessment Branch. Physical and hydrologic characteristics. The Oregon estuaries In National Estuarine Inventory: Supplement. Vol. no.1. Rockville, MD, 1988.
Simmons, Henry B.. The potential of physical models to investigate estuarine water quality problems In Proceedings / Technical Conference on Estuaries of the Pacific Northwest.. Circular / Engineering Experiment Station, Oregon State University, Corvallis . Oregon State University, Engineering Experiment Station, 1971.

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