| Title | Water quality and algal conditions in the North Umpqua River, Oregon, 1995–2007, and their response to Diamond Lake restoration: |
| Publication Type | Report |
| Year of Publication | 2014 |
| Authors | Carpenter, Kurt D., Chauncey W. Anderson, and Mikeal E. Jones |
| Secondary Title | U.S. Geological Survey Open-File Report |
| Volume | no. 2014-1098 |
| Pagination | 89 p. |
| Institution | U.S. Geological Survey |
| City | Reston, Va. |
| Call Number | OSU Libraraies: Digital Open Access |
| Keywords | Anabaena spp. = blue-green algae, Boulder Creek, Calf Creek, Canton Creek, Cladophora spp. = green algae, Clearwater River, Copeland Creek, Diamond Lake, harmful algae blooms, Lake Creek, Lemolo Lake, Little River, nitrogen, North Umpqua River, Panther Creek, pH, Rock Creek, Steamboat Creek, Susan Creek, Toketee Lake, Tui chub = Gila bicolor, water quality, water temperature, Wright Creek |
| Notes | “Prepared in cooperation with Douglas County and the U.S. Forest Service.” By the early 1990s, scientists were concerned about algal blooms in the North Umpqua River. Algal blooms in Diamond Lake and Lemolo Lake were possible sources of the problem. When plans were made to draw down Diamond Lake and re-set the food web by killing the invasive Tui chub, an opportunity was seen for looking at conditions in the North Umpqua River, in particular relating to algal blooms. The river was surveyed in 2005 before the drawdown, and in 2007, after Diamond Lake was restored. This report focuses on harmful algae blooms in the North Umpqua River, the causes of the blooms, and their effects on the ecosystem. |
| URL | https://pubs.usgs.gov/of/2014/1098/pdf/ofr2014-1098.pdf |
| DOI | 10.3133/ofr20141098 |
