Idaho · Area of Critical Environmental Concern
Upper Bruneau Canyon
BLM found a natural system, a wildlife resource, a cultural value and a fish resource here, and its plan calls for special management. BLM's records place no claim, lease or right of way inside the line today, and five grazing allotments cover part of it. It covers 17,658 acres and was designated September 2, 2015, in the Jarbidge RMP 2015. In the plan's name, RMP stands for 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 5 grazing allotments below aren't marked.Grazing allotments
5 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Diamond A119,787acres
- Diamond A Taylor Pocket16,346acres
- Bruneau Canyon14,194acres
- Blackrock Pocket13,101acres
- Scott Table8,999acres
The nearest areas
- Triplet ButteIdaho · 312 acres · a grazing allotment covering part of it4miles
- Cottonwood CreekIdaho · 326 acres · a grazing allotment covering part of it38miles
- The Tules RNAIdaho · 114 acres · a grazing allotment covering part of it44miles
- Lower Bruneau CanyonIdaho · 963 acres · a grazing allotment covering part of it46miles
- Owyhee River Bighorn Sheep Habitat AreaIdaho · 57,138 acres · at least 21 active mining claims, 4 grazing allotments covering part of it46miles
Next to it
Triplet Butte Area of Critical Environmental Concern touches the line.
More from BLM's Idaho office
Every area BLM's Idaho 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 Upper Bruneau Canyon. 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