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May 29, 2026
 
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Yellowstone National Park » Yellowstone National Park Bison Management Plan SEIS » Document List » Document Contents

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.
 
Comment Period: In Review        Apr 29, 2026 - May 29, 2026
Comment period closes May 29, 2026 at 11:59 PM Mountain Time in:
Days, Hours, Min.
Document Content:
2026 04 29_FRN_Bison SEIS YELL.pdf   (645.6 KB, PDF file)
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