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| Title | Zinc, Copper, and Lead Concentrations in Quilceda and Allen Creeks: Results of Cooperative Monitoring by Snohomish County and the Washington State Department of Ecology | |||
| Month-Year Published | October 2001 | |||
| Online Availability |
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| Short Description |
Results are reported from a routine water quality monitoring program focused on zinc, copper, and lead concentrations in Quilceda and Allen creeks, two urban streams in Snohomish County, Washington. The data are examined for spatial and temporal trends, and compared to results from other western Washington creeks. (Also see abstract below) | |||
| Publication Number | 01-03-031 | |||
| Author(s) | Johnson, A., K. Thornburgh, and E. Stewart | |||
| Print Availability | ||||
| Number of pages | 32 pp. + app (68 total) | |||
| Keywords | copper, county, creek, lead, monitoring, recommendations, results, toxic, trend, urban, water, zinc | |||
| Subject Waterbodies |
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| Abstract | Long Description |
Results are reported from a routine water quality monitoring program focused on zinc, copper, and lead concentrations in Quilceda and Allen creeks, two urban streams in Snohomish County, Washington. The data are examined for spatial and temporal trends, and compared to results from other western Washington creeks. The highest metals concentrations were found in Allen Creek. Although elevated levels of total recoverable metals were occasionally observed, the dissolved fraction remained within state water quality standards. An analysis of historical data showed a significant decrease in total recoverable zinc and lead concentrations has occurred in both creeks. Recommendations include analyzing dissolved metals as part of the county′s routine monitoring of lower Allen Creek and assessing the potential for sediment toxicity in these two drainages. |
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