Wyoming · Area of Critical Environmental Concern
Bridger Butte ACEC
BLM found a cultural value and a historic value here, and its plan calls for special management. BLM's records place no claim, lease or right of way inside the line today, and three grazing allotments cover part of it. It covers 604 acres and was designated May 24, 2010, in the Kemmerer Resource Management Plan.
One of the 1,120 places the Bureau of Land Management has designated an Area of Critical Environmental Concern. This page shows its line, what BLM found there and what sits inside it.
The line
Ground: USGS The National Map, topographic tiles. Boundaries: BLM's own, read Oct 20, 2026. The 3 grazing allotments below aren't marked.Grazing allotments
3 grazing allotments cover part of this line. Their permittees aren't named here yet.
- NEBRASKA FLAT4,623acres
- BRIDGER BUTTE3,066acres
- QUARRY CREEK2,164acres
The nearest areas
- Pine Springs ACECWyoming · 6,486 acres · a grazing allotment covering part of it39miles
- Cushion Plant Community ACECWyoming · 62 acres · a grazing allotment covering part of it40miles
- Special Status Plant Species ACECWyoming · 4,469 acres · 19 grazing allotments covering part of it43miles
- Laketown CanyonUtah · 15,299 acres · 2 rights of way, 4 grazing allotments covering part of it55miles
- Dairy Hollow RNAIdaho · 44 acres · a grazing allotment covering part of it61miles
More from BLM's Wyoming office
Every area BLM's Wyoming office holdsThe proposed rule
A proposed rule, RIN 1004-AF53, would change how BLM drafts every land use plan, and how it designates ACECs like Bridger Butte ACEC. The comment window hasn't opened: the proposed rule wasn't in the Federal Register at our last check. The Watch sends one email the day it prints.
The rule's abstract
The purpose of this rulemaking is to establish in regulations an updated process for the approval of the development, revision, amendment, and maintenance of land use plans, as provided for by the Federal Land Policy and Management Act of 1976, for public lands administered by the Bureau of Land Management (BLM). Additionally, this rulemaking will provide clarification of the process the BLM uses for designating Areas of Critical Environmental Concern.Unified Agenda entry for RIN 1004-AF53, Publication ID 2026, reginfo.gov (OMB OIRA), read Oct 18, 2026