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Lake Sammamish received large mercury fluxes during the 1940s. Puget Sound’s rapid population and industry growth during the World War II years likely contributed to the flux rates. Since the 1940s, mercury levels in Lake Sammamish have steadily decreased.
Sources to the lake include the global reservoir and Puget Sound air releases. Neighboring Lake Washington exhibited similar mercury contamination patterns in a separate coring study (Van Metre, 2004).
See also:
History of Mercury in Selected Washington Lakes Determined from Age-Dated Sediment Cores
Quality Assurance Project Plan: Depositional History of Mercury in Selected Washington Lakes Determined from Sediment Cores
Mercury in Lake Whatcom Sediments: Spatial Distribution, Depositional History, and Tributary Inputs
Mercury in Edible Fish Tissue and Sediments from Selected Lakes and Rivers of Washington State, 2003
Washington State Toxics Monitoring Program: Contaminants in Fish Tissue from Freshwater Environments in 2006
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