Water quality of Bear Creek basin, Jackson County, Oregon
Open-File Report
80-158
By: Loren A. Wittenberg and Stuart W. McKenzie
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Abstract
Water-quality data identify surface-water-quality problems in Bear Creek basin, Jackson County, Oreg., where possible, their causes or sources. Irrigation and return-flow data show pastures are sources of fecal coliform and fecal streptococci bacteria and sinks for suspended sediment and nitrite-plus-nitrate nitrogen. Bear Creek and its tributaries have dissolved oxygen and pH values that do not meet State standards. Forty to 50% of the fecal coliform and fecal streptococci concentrations were higher than 1,000 bacteria colonies per 100 milliliters during the irrigation season in the lower two-thirds of the basin. During the irrigation season, suspended-sediment concentrations, average 35 milligrams per liter, were double those for the nonirrigation season. The Ashland sewage-treatment plant is a major source of nitrite plus nitrate, ammonia, and Kjeldahl nitrogen, and orthophosphate in Bear Creek. (USGS)
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Water quality of Bear Creek basin, Jackson County, Oregon |
| Series title | Open-File Report |
| Series number | 80-158 |
| DOI | 10.3133/ofr80158 |
| Edition | - |
| Year Published | 1980 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Contributing office(s) | Oregon Water Science Center |
| Description | viii, 130 p. ill., maps (1 fold. in pocket) ;27 cm. |
| Google Analytic Metrics | Metrics page |