Notice of Intent To Prepare a Supplemental Environmental Impact Statement for a Bison Management Plan at Yellowstone National Park

SUMMARY:
The National Park Service (NPS) intends to prepare a Supplemental Environmental Impact Statement (SEIS) to update the analysis in the Yellowstone National Park Bison Management Plan Final Environmental Impact Statement (EIS), 2024. Seasonal bison migration out of the park has become less predictable in timing and duration. This change affects the reliability of management assumptions that informed the 2024 analysis, warranting supplemental review.

DATES:
All comments must be received or postmarked on or before May 29, 2026.

Document Content:

2026 04 29_FRN_Bison SEIS YELL.pdf   (645.6 KB, PDF file) Disclaimer: Links within the above document(s) were valid as of the date published. Note: Some of the files may be in PDF format and can be viewed using the Adobe Acrobat Reader software. You may download a free copy of from Adobe Systems.