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Giffin Lake (Yakima County) Verification Monitoring

Publication number Date Published
14-03-040August 2014
VIEW NOW Giffin Lake (Yakima County) Verification Monitoring (Number of pages: 11) (Publication Size: 495KB)

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Author(s) Anderson, M.S.
Description Giffin Lake was once a popular recreation site, particularly for anglers, but excessive macrophyte growth degraded the waterbody to the point that it was no longer usable for recreation. The macrophyte growth was fueled by an excess of nutrients from internal and external sources.

Water samples collected at Giffin Lake during 1990 and 1991 contained high levels of phosphorus, which resulted in the lake being placed on the Clean Water Act 303(d) list of impaired waters.

This study confirms that conditions found during the 1990-91 sampling are still present in Giffin Lake. Samples collected in Aug-Sept 2012 show that the lake is still eutrophic and that phosphorus levels are still higher than acceptable for a lake in this region.
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Keywords verification, Giffin Lake, lakes, 303(d), phosphorus
WEB PAGE Lake water quality monitoring & protection
WATERSHED Water Resource Inventory Area 37 Lower Yakima
DATA Environmental Information Management (EIM) #MIKA0001


Quality Assurance Project Plan: Giffin Lake (Yakima County) Verification Monitoring