Surface water monitoring program for pesticides in salmonid-bearing streams, April through October, 2004

This report presents second-year (2004) results in a three-year study to characterize pesticide concentrations in salmon-bearing surface waters. Thornton Creek in the Cedar-Sammamish watershed was chosen for an urban drainage evaluation. Marion Drain, Spring Creek, and Sulphur Creek Wasteway in the Lower Yakima watershed represented agricultural land-use patterns.