  |
|
|
|
|
| Title | River and Stream Ambient Monitoring Report for Water Year 1998 | |
| Month-Year Published | September 2000 | |
| Online Availability |
403 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
| |
| Short Description |
The Washington State Department of Ecology collected monthly water quality information at 84 river and stream monitoring stations during Water Year (WY) 1998 (October 1, 1997 through September 30, 1998). The principal goals of this ongoing monitoring program are to characterize the rivers and streams of Washington State and to track changes in water quality. (Also see abstract below) | |
| Publication Number | 00-03-035 | |
| Author(s) | Hallock, D. and W. Ehinger | |
| Print Availability | ||
| Number of pages | 14 pp. + app (38 total) | |
| Keywords | ambient monitoring, goals, internet, monitoring, Puget Sound, report , river, stream, temperature, trend, water, watershed | |
| Abstract | Long Description |
The Washington State Department of Ecology collected monthly water quality information at 84 river and stream monitoring stations during Water Year (WY) 1998 (October 1, 1997 through September 30, 1998). The principal goals of this ongoing monitoring program are to characterize the rivers and streams of Washington State and to track changes in water quality. Overall, water quality for WY 1998 was similar to that measured in previous years, based on the total number of results exceeding water quality criteria. Fewer results exceeded the fecal coliform bacteria criteria in western Washington, but more results exceeded the temperature and pH criteria in eastern Washington than in the past few years. The fecal coliform bacteria geometric mean continued to be the most frequently exceeded criterion based on individual samples. The geometric mean criterion was exceeded 113 times and 57 samples exceeded the "10 percent not to exceed" criterion, out of about 1,000 samples collected. Forty-five of 84 stations had at least one sample that exceeded the geometric mean criterion. Twenty-five stations were west of the Cascade Mountains, and 14 were stations on streams that drain to Puget Sound. Temperature and pH standards criteria were exceeded 88 and 59 times, respectively, at 50 and 24 stations, mostly in eastern Washington. The dissolved oxygen criterion was exceeded 39 times at 25 stations, also most often in eastern Washington. A description of this long-term monitoring program and access to historical data can be found on Ecology's Internet web site at http://www.ecy.wa.gov/ under "Conditions and Trends" and "Watersheds". |
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
