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Land-Use Effects on Export and Retention of Mercury in the Lake Ozette Watershed

Publication number Date Published
10-03-059November 2010
VIEW NOW: Land-Use Effects on Export and Retention of Mercury in the Lake Ozette Watershed (Number of pages: 55) (Publication Size: 1200KB)

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Author(s) Furl, C. and C. Meredith
Description Eight sampling events were conducted at three streams in and adjacent to the Lake Ozette watershed from September 2009 - March 2010 to assess the effects of land use on mercury export. The sites included two logged watersheds and an unlogged reference site. Water samples were analyzed for total mercury, methylmercury, total organic carbon, dissolved organic carbon, and total suspended solids.

Differences in water quality characteristics between the three creeks hampered cross-comparisons of the mercury data. However, median mercury fluxes were highest in the most extensively logged watershed. Mercury fluxes differed little between the remaining logged watershed and the reference site.
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Keywords WRIA 20, creek, Flux, flow, river, water, watershed, mercury, lake
WATERSHED Water Resource Inventory Area 20 Soleduck-Hoh
DATA Environmental Information Management (EIM) #CFUR0006


Quality Assurance Project Plan: Lake Ozette Watershed PBT Monitoring: Speciated Mercury in Stream Surface Waters