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2003
Geyer, Nancy A.. Calapooya Creek Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
Benedict, Rae T.. Evaluating Oregon's Beach Sites and Assessing Twenty-Six Coastal Beach Areas for Recreational Water Quality Standards. M.S. ed. Corvallis, Or.: Oregon State University, 2003.
Geyer, Nancy A.. Lower North Umpqua Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
Geyer, Nancy A.. Lower South Umpqua Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
Geyer, Nancy A.. Middle South Umpqua Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
Geyer, Nancy A.. Myrtle Creek Watershed Assessment and Action Plan. Roseburg, Or.: Umpqua Basin Watershed Council, 2003.
DeVore, Matt B., and Nancy A. Geyer. Olalla / Lookingglass Watershed Assessment and Action Plan. Umpqua Basin Watershed Council, 2003.
1986
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.

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