J. Val Klump

Jeffrey Val Klump is an American limnologist. He was the first person to reach the deepest spot in Lake Superior, a depth of 1333 feet (733 feet below sea level), the second lowest point in the United States after Iliamna Lake, on July 30, 1985 while aboard the R/V Seward Johnson with the Johnson Sea Link-II submersible.{{cite news |title=Variations In Sediment Accumulation Rates And The Flux Of Labile Organic Matter In Eastern Lake Superior Basins |year=1989 |publisher=The Journal of Great Lakes Research |url=http://loracsevents.com/dev/iaglr/dev/jglr/db/view_contents.php?pub_id=965&mode=view&table=yes&topic_id=30&mode=topic_section&volume=15&issue=1 |access-date=2009-08-09 |url-status=usurped |archive-url=https://archive.today/20121203024023/http://loracsevents.com/dev/iaglr/dev/jglr/db/view_contents.php?pub_id=965&mode=view&table=yes&topic_id=30&mode=topic_section&volume=15&issue=1 |archive-date=2012-12-03 }} Klump was also the first person to reach to the deepest point in Lake Michigan as part of the same expedition. He is currently a professor and associate dean at the University of Wisconsin–Milwaukee School of Freshwater Sciences.{{cite news |title=School of Freshwater Sciences: People |year=2017 |url=https://uwm.edu/geosciences/people/klump-j-val/ |access-date=2017-09-20}}