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2006
Winn, Lisa A.. Rock Creek Region Assessment and Action Plan. [Roseburg, Or.?]: Umpqua Basin Watershed Council, 2006.
→ static1.squarespace.com/static/5a0dcc9bbce17698a0425591/t/5a0dcdfad63352ad667fdbf4/1339723697083/RockCreekArea.zip
2003
Geyer, Nancy A.. Calapooya Creek Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
→ ir.library.oregonstate.edu/concern/defaults/c821gq51h
Geyer, Nancy A.. Lower North Umpqua Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
→ ir.library.oregonstate.edu/concern/defaults/k643b619h
Geyer, Nancy A.. Lower South Umpqua Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
→ ir.library.oregonstate.edu/concern/defaults/hq37vt464
Geyer, Nancy A.. Myrtle Creek Watershed Assessment and Action Plan. Roseburg, Or.: Umpqua Basin Watershed Council, 2003.
→ ir.library.oregonstate.edu/concern/defaults/df65vd58t
2001
U. S. Forest Service. North Umpqua Ranger District, and Umpqua National Forest. Middle North Umpqua Watershed Analysis: Version 1.0. [Roseburg, Or.]: Umpqua National Forest, North Umpqua Ranger District, 2001.
→ www.fs.usda.gov/detail/umpqua/landmanagement/planning/?cid=stelprdb5335945
Whiting, Allan. Sutherlin Creek Watershed Assessment. [Salem, Or.?]: Dept. of Environmental Quality, 2001.
1998
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.
→ ir.library.oregonstate.edu/concern/defaults/nz806349h
Anderson, Chauncey W., and Kurt D. Carpenter. Water-quality and algal conditions in the North Umpqua River Basin, Oregon, 1992-95, and implications for resource management In Water-Resources Investigations Report / U.S. Geological Survey. Portland, Or.: The Survey, 1998.
→ pubs.er.usgs.gov/publication/wri984125