Endangered and Threatened Wildlife and Plants; Designation of Critical Habitat for Five Endangered Mussels in the Tennessee and Cumberland River Basins

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We, the U.S. Fish and Wildlife Service (Service), designate 13 river and stream segments (units) in the Tennessee and/or Cumberland River Basins, encompassing a total of approximately 885 river kilometers (rkm) (550 river miles (rmi)) of river and stream channels, as critical habitat for five endangered mussels [Cumberland elktoe (Alasmidonta atropurpurea), oyster mussel (Epioblasma capsaeformis), Cumberlandian combshell (Epioblasma brevidens), purple bean (Villosa perpurpurea), and rough rabbitsfoot (Quadrula cylindrica strigillata)] under the Endangered Species Act of 1973, as amended (Act). We solicited data and comments from the public on all aspects of this designation, including data on economic and other impacts of the designation. This publication also provides notice of the availability of the final economic analysis for this designation.