No Mussels in Mighty Miss' Locks

From September 10, 1991 (update #10)

WINONA, Minn. -- A recent survey of seven Mississippi River navigation locks from Hastings, Minn., to 30 miles south of Clinton, Iowa, turned up no zebra mussels, according to U.S. Fish & Wildlife Service biologist Scott Yess. Each lock was inspected after partial dewatering, allowing FWS biologists to inspect four to six feet (1.2-1.8) of exposed wall from a small boat. A similar survey will probably be conducted next spring, Yess said.

ID: 19910910-4.

The Zebra Mussel Update was a 4- to 8-page quarterly national newsletter published by the University of Wisconsin Sea Grant Institute from May 1990 through May 1997. The ZMU documented the spread of the zebra mussel -- an exotic nuisance mussel -- through North America's freshwater environments, especially the Great Lakes, and on efforts to control it.