@article {25521,
	title = {Assessment of water quality, nutrients, algal productivity, and management alternatives for low-flow conditions, South Umpqua River basins, Oregon, 1990-92},
	volume = {no.96-4082},
	year = {1996},
	note = {{\textquotedblleft}This report is an evaluation of the effects of nutrient loading on water quality in the South Umpqua River Basin. . . . Five wastewater-treatment plants were shown to contribute less than 15 percent of the flow, but more than 90 per-cent of the nitrogen and phosphorus, in the South Umpqua River during low streamflows in summer. These nutrient inputs were associated with, and largely responsible for, the dense growth of periphytic algae that covered the rocky channel and produced biomass values as large as 340 grams of ash-free dry weight per square meter.{\textquotedblright} (from the Abstract) Algal respiration at night depleted dissolved oxygen, while daytime photosynthesis caused water pH to exceed the Oregon standard. },
	month = {1996},
	pages = {71 p.},
	institution = {U.S. Dept. of the Interior, U.S. Geological Survey},
	address = {Portland, Ore.},
	keywords = {algae, ammonia, bacteria, Cow Creek, Days Creek, Deadman Creek, Deer Creek, dissolved oxygen, Elk Creek, eutropication, human impacts, Jackson Creek, Lookingglass Creek, Myrtle Creek, nitrogen, phosphorus, South Umpqua River, streamflow, waste disposal, water pollution, water quality},
	url = {https://pubs.usgs.gov/wri/1996/4082/report.pdf},
	author = {Tanner, D. Q.}
}
