Notice2026-08277

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

Primary source

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Published
April 29, 2026

Issuing agencies

Interior DepartmentNational Park Service

Abstract

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.

Full Text

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<title>Federal Register, Volume 91 Issue 82 (Wednesday, April 29, 2026)</title>
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[Federal Register Volume 91, Number 82 (Wednesday, April 29, 2026)]
[Notices]
[Pages 23112-23113]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-08277]


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DEPARTMENT OF THE INTERIOR

National Park Service

[NPS-IMR-YELL- NPS0042535; PPMPSPD1Z.000000/266P103601/PPIMYELL1A]


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

AGENCY: National Park Service, Interior.

[[Page 23113]]


ACTION: Notice of intent to prepare a supplemental environmental impact 
statement.

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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.

ADDRESSES: To submit comments for consideration in the development of 
the SEIS, you may use any of the following methods:
    <bullet> Electronically: <a href="https://parkplanning.nps.gov/YellowstonebisonEIS">https://parkplanning.nps.gov/YellowstonebisonEIS</a>
    <bullet> By Hard Copy, Mail to: Attn: Bison Management Plan SEIS, 
P.O. Box 168, Yellowstone National Park, WY 82190.
    Information regarding this public scoping process for the SEIS is 
available online at <a href="https://parkplanning.nps.gov/YellowstonebisonEIS">https://parkplanning.nps.gov/YellowstonebisonEIS</a>.
    Comments will not be accepted by fax, email, or by any method other 
than those specified above. Comments received after this date will be 
considered to the extent practicable.

FOR FURTHER INFORMATION CONTACT: Linda Veress, (307) 344-2015, 
<a href="/cdn-cgi/l/email-protection#bfc6dad3d3e0cfcaddd3d6dce0ded9d9ded6cdccffd1cfcc91d8d0c9"><span class="__cf_email__" data-cfemail="027b676e6e5d7277606e6b615d636464636b7071426c72712c656d74">[email&#160;protected]</span></a>.

SUPPLEMENTARY INFORMATION: The 2024 EIS evaluated three alternatives 
that considered various approaches and tools to maintain an 
ecologically sustainable population of wild, migratory bison while 
continuing to work with partners to address brucellosis transmission, 
human safety, and property damage, and fulfill tribal trust 
responsibilities. The NPS will supplement the 2024 Final EIS by 
developing one or more new alternatives, in addition to those 
previously considered. These new alternative(s) may incorporate 
elements previously dismissed from detailed analyses or include 
elements not previously considered. The SEIS will provide additional 
analysis on the reasonably foreseeable effects of the new 
alternative(s). Further, the 2024 Final EIS has been challenged in two 
lawsuits in the District of Montana (Alliance for the Wild Rockies et 
al. v. Carlstrom et al., CV-25-12-BLG-BMM & State of Montana v. Burgum 
et al., CV-24-180-BLG-BMM). As part of the SEIS process, NPS will 
determine whether additional analysis of any issues raised in those 
lawsuits is appropriate, and if so, will include such analysis in the 
SEIS.
    While a Notice of Intent is not required for a SEIS, the NPS is 
soliciting information or studies or analyses relevant to this process 
and environmental impacts in the form of public comments. The NPS will 
request additional public comments on a draft SEIS before publishing a 
final SEIS.
    Relevant Information, Studies, or Analyses: Information, studies, 
or analyses relevant to the SEIS are found beginning on page 121 of the 
2024 Final EIS and at the below address: <a href="https://parkplanning.nps.gov/YellowstonebisonEIS">https://parkplanning.nps.gov/YellowstonebisonEIS</a>.

(Authority: 42 U.S.C. et seq.)

Herbert C. Frost,
Acting Regional Director, Interior Regions 6, 7, and 8.
[FR Doc. 2026-08277 Filed 4-28-26; 8:45 am]
BILLING CODE 4312-52-P


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Indexed from Federal Register on April 29, 2026.

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