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control considerations made it difficult to interpret some of the data. It does appear, however, that some of the metabolites of DDT were positively associated with TSS. The high concentrations of the DDT metabolites and dieldrin were correlated with agricultural areas. This report contains previously unreported organochlorine-pesticide data from four stream sites and two storm drains, all sampled during a storm from March 11 to March 13, 2002. These results are compared with those from other organochlorine-compound samplings over the past decade. The interpretations of these data were used to

Creek forms a wildlife and recreational corridor through densely populated areas of the Portland, Oregon, metropolitan area and through rural and agricultural land in unincorporated Multnomah and Clackamas Counties. Johnson Creek has had a history of persistent flooding and water-quality problems. The U.S. Geological Survey (USGS) has conducted streamflow monitoring and other hydrologic studies in the basin since 1941.

2003, the U.S. Geological Survey (USGS), in cooperation with BLM and with subsequent support from the U.S. Fish and Wildlife Service, began a study to characterize the hydrologic and water-quality conditions within the Wood River Wetland to help address questions regarding possible consequences of future management options. KLAMATH CO JACKSON CO