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NPDES Permit for Yellowtail Dam Wastewater Treatment Facility in Montana

Under National Pollutant Discharge Elimination System permit number MT-0022993, the United States Bureau of Reclamation is authorized to discharge from its wastewater treatment facility located on the Crow Reservation in Big Horn County, Montana, to the Yellowtail Afterbay Reservoir/Bighorn River.

MT0022993 Yellowtail Dam Wastewater Treatment Facility NPDES Permit (pdf) (412.97 KB, January 30, 2023)
The final NPDES permit.
MT0022993 Yellowtail Dam Wastewater Treatment Facility Statement of Basis (pdf) (485.3 KB, January 30, 2023)
The statement of basis for the final NPDES permit.