Feds Shield Rivers for Rare Mussels: Snuffbox and Sheepnose Get VIP Status
Published Date: 4/27/2026
Rule
Summary
The U.S. Fish and Wildlife Service is officially protecting over 3,800 river miles across 17 states as critical habitat for four endangered freshwater mussels: rayed bean, sheepnose, snuffbox, and spectaclecase. This means these rivers will get special care to help these mussels survive and thrive. The new protections start May 27, 2026, and could affect activities near these waters, encouraging conservation efforts without heavy costs.
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Analyzed Economic Effects
4 provisions identified: 2 benefits, 1 costs, 1 mixed.
3,814 River Miles Designated Critical Habitat
The Fish and Wildlife Service designates approximately 3,814 unique river miles of critical habitat across 76 units in 17 States (AL, AR, IL, IN, IA, KY, MI, MN, MS, MO, NY, OH, PA, TN, VA, WV, and WI) for four endangered freshwater mussels (rayed bean, sheepnose, snuffbox, spectaclecase). The designations are effective May 27, 2026, and the rule lists species totals: rayed bean ~599 rmi (15 units), sheepnose ~801 rmi (11 units), snuffbox ~2,425 rmi (38 units), spectaclecase ~1,140 rmi (12 units).
Federal Actions Trigger Section 7 Reviews
Federal agencies must ensure their actions do not destroy or adversely modify the designated critical habitat under section 7 of the Endangered Species Act. The rule states that because all designated areas are occupied by the mussels, section 7 consultations were already required for activities with a Federal nexus and the Service expects little to no additional consultations due solely to the designation, although the economic screening analysis quantifies the administrative burden.
Private Lands and Agriculture Not Restricted
The critical habitat designations include only aquatic areas up to the ordinary high water mark and do not include agricultural or cultivated lands. Private activities without a Federal nexus are unaffected, the designation does not change land ownership or access, and non-Federal landowners are not required to implement restoration or recovery measures.
Unit Boundary Adjustments Changed Local Coverage
The final rule makes multiple unit-specific changes: RABE 9 (Allegheny River) increases by ~49 rmi (NY and PA); RABE 10 (Middle Allegheny River) increases by ~8 rmi (PA); SNBO 13 (Little Kanawha River) decreases by ~18 rmi (WV); SNBO 14 (Kanawha River/Elk River reach) decreases by ~49 rmi (WV); SNBO 16 (Little Darby Creek) increases by ~7 rmi (OH); SNBO 17 (Big Darby Creek) increases by ~31 rmi (OH); SPCA 9 (Clinch River) decreases by ~3 rmi. These changes alter which specific river segments are designated in those local areas.
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