Park Planning

Planning projects in Yellowstone National Park include Environmental Impact Statements, Environmental Assessments, management plans, and decision documents, such as Findings of No Significant Impact and Records of Decision. Ongoing and recently completed planning projects can be found on the National Park Service Planning, Environment & Public Comment (PEPC) website.




Documentation for projects not included on the Planning, Environment & Public Comment (PEPC) website may be listed below.

Winter Use in Yellowstone
Mammoth Housing Plan - FONSI (June 20, 2003)
Final Environmental Impact Statement and Bison Management Plan - ROD (December 20, 2000)

Glossary of Terms

Environmental Impact Statement (EIS)
An EIS is prepared when a proposed action or alternatives have the potential for significant effect on the human environment.

Environmental Assessment (EA)
An EA is prepared to determine whether the impact of a proposed action or alternatives could be significant.

Record of Decision (ROD)
The document that is prepared to substantiate a decision based on an EIS. It includes a statement of the decision made, a detailed discussion of decision rationale, and the reasons for not adopting all mitigation measures analyzed, if applicable.

Finding of No Significant Impact (FONSI)
A determination based on an EA and other factors in the public planning record for a proposal that, if implemented, would have no significant impact on the human environment.

The procedure by which an agency identifies important issues and determines the extent of analysis necessary for an informed decision on a proposed action. Scoping, an integral part of environmental analysis, includes early involvement of interested and affected public, as well as internal and external agency contacts. Although formal scoping occurs for a specific time period, we welcome your comments on projects while we are in the process of preparing plans.

Last updated: November 2, 2023

Park footer

Contact Info

Mailing Address:

PO Box 168
Yellowstone National Park, WY 82190-0168



Contact Us