Schmisseur, Ed, Russell C. Youmans, William Boodt, Oregon State University. Water Resources Research Institute, U.S. Army Corps of Engineers. Portland District, Oregon State University. Agricultural Experiment Station, and Pacific Northwest River Basins Commission. Economic impact of public investments in small-boat facilities and county and state parks in the Lower Umpqua River area of Douglas County, Oregon. In WRRI  . Vol. no.30. Corvallis, Or.: Water Resources Research Institute, Oregon State University, 1975.