Record Details
Relations of Tualatin River water temperatures to natural and human-caused factors
J.W.Marriott Library CONTENTdm Server Repository
| Field | Value |
|---|---|
| Title | Relations of Tualatin River water temperatures to natural and human-caused factors |
| Creator | Risley, John C. |
| Subject | Water quality; Water temperature; Salmon; Trout; Fishes; Fishes -- Effect of human beings on; Nature -- Effect of human beings on; Management; Computer simulation; |
| Coverage | Columbia River; Oregon; |
| Description | Aquatic research has long shown that the survival of cold-water fish, such as salmon and trout, decreases markedly as water temperatures increase above a critical threshold, particularly during sensitive life stages of the fish. In an effort to improve the overall health of aquatic ecosystems, the State of Oregon in 1996 adopted a maximum water-temperature standard of 17.8 degrees Celsius (68 degrees Fahrenheit), based on a 7-day moving average of daily maximum temperatures, for most water... |
| Publisher | U.S. Geological Survey |
| Contributor | Unified Sewerage Agency of Washington County, Oregon |
| Date | 1997 |
| Type | text; |
| Format | application/pdf; |
| Source | Risley, John C., 1997, Relations of Tualatin River water temperatures to natural and human-caused factors, Portland Oregon: U.S. Geological Survey Water-Resources Investigations Report 97–4071, 153 p. |
| Language | eng |
| Rights | Public Domain, Courtesy of the USGS |
| Identifier | http://content.lib.utah.edu/cdm/ref/collection/wwdl-er/id/58 |
