William “Bill” Hilsenhoff passed away on Thursday June 16, 2011, in Middleton. He became a project associate with the UW Entomology Department, and eventually full professor. He received a UW Faculty Meritorius Emeritus award. in 1999. In June 2010, he received the North American Benthological Society’s Award of Excellence and Environmental Stewardship Award. Among his other achievements was the development of the Hilsenhoff Biotic Index used world-wide by water resource managers to gauge water quality.
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