A report on Lake Washington water quality

About This Report

As part of its mission to protect and restore water quality, the Water and Lands Resources Division studied water quality trends and conditions in Lake Washington from 1990 to 2001. The attached report summarizes lake conditions and how Lake Washington has responded to human activities that have changed the watershed, amount of nutrients entering the lake, interactions with other parts of the lake environment, and seasonal or year to year variability.

Viewing the Report

This report is provided in Adobe PDF format. You will need Adobe Acrobat to view the document. If you do not have this software, you can download a free copy of Adobe© Acrobat© Reader

Download the report by section:

• Introduction, Historical Conditions, Monitoring Background (2.3 MB)
• Summary of Monitoring Data (3.29 MB)
• Summary of Monitoring Data con't, Glossary, References, Appendix A: Means and Standard Deviations of Water Quality Data (364 KB)
• Appendix B: Metals and Organic Compounds Analyzed in Lake Washington, Appendix C: Calculations for Determining Metal Concentrations Based on Hardness, and Appendix D: Procedure for Treating Parameter Distributions for Means, Standard Deviations, and Statistical Tests (589 KB)

Or, download the entire report (5.3 MB):

View the entire Lake Washington Existing Conditions Report.