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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.
Laenen, Antonius, Winston H. Woo, U.S. Geological Survey, and Douglas County. Stream velocities and reareation coeffiecients for the South Umpqua River between Tiller and Roseburg, Oregon, 1991 In Water-Resources Investigations Report . Portland, Or: U.S. Geological Survey, 1994.
Grover, Nathan Clifford, Fred Forbes Henshaw, and U.S. Geological Survey. Surface water supply of the United States, 1912. Part XII, North Pacific coast drainage basins. C, Lower Columbia River and Rogue, Umpqua, and Siletz rivers / Prepared in cooperation with the States of Oregon and Washington In Geological Survey water-supply paper. Washington, D.C.: U.S. Govt. Print. Off, 1914.
Oregon. State Engineer, and U.S. Geological Survey. Water resources of the state of Oregon: summary of available information ... In Bulletin / Oregon State Engineer. Salem, Or.: State Printing Dept., 1914.
Oregon. State Engineer, and U.S. Geological Survey. Water resources of the state of Oregon: summary of available information 1914-1924 : Umpqua, Coquille In Bulletin / Oregon State Engineer. Salem, Or.: State Printing Dept., 1925.
Anderson, Chauncey W., Dwight Q. Tanner, Douglas B. Lee, U.S. Geological Survey, and Douglas County Or.. Water-quality data for the South Umpqua River Basin, Oregon, 1990-92 [microform] In U.S. Geological Survey Open-File Report. Portland, Or.: U.S. Dept. of the Interior, U.S. Geological Survey, 1994.