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Oregon. Dept. of Environmental Quality. Oregon's 2012 Integrated Report., 2012.
→ www.deq.state.or.us/wq/assessment/rpt2012/search.asp
Oregon. Dept. of Environmental Quality, and David A. Rickert. Oregon's Statewide Assessment of Nonpoint Source Problems. [Oregon Department of Environmental Quality], 1978.
Oregon. Dept. of Environmental Quality. Oregon's 2010 Integrated Report., 2010.
→ www.deq.state.or.us/wq/assessment/rpt2010/search.asp
Oregon. Dept. of Environmental Quality. Water Quality Standards for Umpqua River Basin, Oregon. Dept. of Environmental Quality, 1969.
Oregon. Dept. of Environmental Quality. Umpqua Basin Status Report and Action Plan. Portland, Or.: Oregon Dept. of Environmental Quality, 2014.
→ www.oregon.gov/deq/FilterDocs/BasinlUmpquaAssess.pdf
Oregon. Dept. of Environmental Quality. Little River Watershed TMDL. Appendix B : Little River pH Model. [Portland, Or.]: Oregon Dept. of Environmental Quality, 2001.
→ digital.osl.state.or.us/islandora/object/osl%3A34989
Oregon. Dept. of Environmental Quality. Oregon's 2022 Integrated Report. Portland, Or.: Oregon Dept. of Environmental Quality, 2023.
→ www.oregon.gov/deq/wq/Pages/epaApprovedIR.aspx
Oregon. Dept. of Environmental Quality. Public Comment Draft, Oregon's 1998 Section 303(d) Decision Matrix : Oregon's Criteria Used for Listing Waterbodies & Basin Maps. [Portland, Or.]: Oregon Dept. of Environmental Quality, 1998.
Oregon. Dept. of Environmental Quality. Water Quality Index. Hillsboro, Or., 2022.
→ www.oregon.gov/deq/wq/Pages/WQI.aspx
Oregon. Dept. of Environmental Quality, U. S. Environmental Protection Agency Region X, and Oregon. National Guard. Report on Diamond Lake, Douglas County, Oregon : EPA Region X In Working Paper (United States. National Eutrophication Survey). Corvallis, Or.: Corvallis Environmental Research Laboratory, 1978.
→ tinyurl.com/8z5chxdb