Conservation status in the United States
It is listed as endangered and extirpated in Maryland, as endangered in Indiana and Pennsylvania, as threatened in Connecticut, as presumed extirpated in Ohio, and as a special concern in Rhode Island.
- "Plants Profile for Schoenoplectus torreyi (Torrey's bulrush)". plants.usda.gov. Retrieved 24 December 2019.
- http://www.ct.gov/deep/lib/deep/wildlife/pdf_files/nongame/ets15.pdf "Connecticut's Endangered, Threatened and Special Concern Species 2015"]. State of Connecticut Department of Energy and Environmental Protection Bureau of Natural Resources. Retrieved 24 December 2019. (Note: This list is newer than the one used by plants.usda.gov and is more up-to-date.