Publication Summary

The Washington State Department of Ecology Freshwater Monitoring Unit collected monthly water quality information at 95 stream monitoring stations during Water Year 2005 (October 1, 2004 - September 30, 2005). We also collected 30-minute interval temperature data at 76 sites from June through September 2004.

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. This report documents data quality and presents results for Water Year 2005.

The Washington State Department of Ecology (Ecology) collected monthly water quality data at 95 stream monitoring stations during Water Year (WY) 2005 (October 1, 2004 through September 30, 2005). We also collected 30-minute interval temperature data at 76 sites from July through September 2005. 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.

This report is intended to document methods and data quality, and to present the data for WY 2005. A description of Ecology′s long-term monitoring program and access to historical data can be found on Ecology′s Internet web site at www.ecy.wa.gov by clicking on "Environmental Info" and then "River and Stream Water Quality" (under the Watersheds heading).