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The Midwest Region includes Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio and Wisconsin. Find a location near you
Endangered Species ProgramConserving and restoring threatened and endangered species and their ecosystems
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Photo by Nick Rowse; USFWS
Winged Mapleleaf (Quadrula fragosa)Status: Endangered
The winged mapleleaf is an endangered freshwater mussel. Once known to live in about 38 different rivers from Minnesota to Arkansas, it is now found in only 5 rivers: the St. Croix River in Minnesota and Wisconsin, the Ouachita and Saline Rivers in Arkansas, and the Bourbeuse River in Missouri. The St. Croix River contains the only population known to be reproducing. Propagation efforts are progressing with hopes of restocking portions of the mapleleaf's historic range.
About Winged Mapleleaf
Mussels of the St. Croix River
Upper Mississippi River Section 7 Consultation - Fact Sheet
Recovery5-Year Review - May 2015 (71-page PDF
Releasing Captive-Reared Mussels into the Mississippi August 17, 2012
Propagation Activities - 2011 (1.6MB PDF
St. Croix River Conservation Project - 2010 (PDF
Host Fish Identification and Early Life Thermal Requirements (2-page PDF
Recovery
Plan - 1997 (359-page pdf
Midwest Endangered Species Home
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Last updated:
March 12, 2018
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