Wyoming · Area of Critical Environmental Concern
Beaver Rim ACEC
BLM found a natural system, a wildlife resource, a cultural value and a scenic value here, and its plan calls for special management. BLM's records place 5 rights of way inside the line today, and four grazing allotments cover part of it. It covers 6,729 acres and was designated June 26, 2014, in the Lander 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
The rights of way
5 rights of way sit inside the line. BLM files 3 under non-energy facilities, 1 under other energy facilities and 1 under distribution line.
- FREMONT COUNTY (Wyoming)2rights of way
- HIGH PLAINS POWER INC1right of way
- WYOMING DEPARTMENT OF TRANSPORTATION1right of way
- High Plains Power, Inc1right of way
Grazing allotments
4 grazing allotments cover part of this line. Their permittees aren't named here yet.
- BIG PASTURE82,917acres
- EAST BEAVER COMMON69,839acres
- DISHPAN BUTTE16,976acres
- COTTONWOOD BASIN13,457acres
The nearest areas
- Twin Creek ACECWyoming · 65,109 acres · at least 1 active mining claim and 1 more BLM lists as Filed, 1 oil and gas lease, 22 rights of way, 22 grazing allotments covering part of it14miles
- Red Canyon ACECWyoming · 23,962 acres · 7 rights of way, 9 grazing allotments covering part of it21miles
- South Pass Historical Landscape ACECWyoming · 158,545 acres · at least 485 active mining claims and 942 more BLM lists as Filed or Under Review, 50 rights of way, 20 grazing allotments covering part of it25miles
- Lander Slope ACECWyoming · 90,469 acres · 18 rights of way, 41 grazing allotments covering part of it29miles
- Green Mountain ACECWyoming · 24,924 acres · at least 571 active mining claims and 80 more BLM lists as Filed, 18 oil and gas leases, 2 rights of way, 6 grazing allotments covering part of it35miles
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 Beaver Rim 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