Endangered Species
Midwest Region



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Clubshell and Northern Riffleshell Augmentation in Illinois


The U.S. Fish and Wildlife Service is considering releasing clubshell and riffleshell mussels into Illinois’ Vermilion River Basin. Both mussels were listed as endangered in 1993 and were believed to be gone from Illinois until discovery of a live clubshell in 2000.  The Service is exploring options for releasing clubshells and riffleshells into suitable habitat as one of a number of ongoing efforts to recover the two species. A draft Environmental Assessment of those alternatives is now available for public review and comment. The 30-day comment period is open until August 8, 2008.


Draft Environmental Assessment (Prepared May 2008)


News Release: Steps Proposed to Save Endangered Mussels (July 8, 2008)


2006 Grant Proposal: Biology, Propagation, and Reintroduction of Northern Riffleshell (Epioblasma torulosa rangiana) and Clubshell (Pleurobema clava)


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Last updated: September 21, 2016