Idaho · Area of Critical Environmental Concern
Jim Sage Canyon RNA
BLM found a natural system here, and its plan calls for special management. BLM's records place no claim, lease or right of way inside the line today, and a grazing allotment covers part of it. It covers 654 acres and was designated January 24, 1985, in the Cassia RMP 1985 / ACEC Amendment 1988. 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 grazing allotment below isn't marked.Grazing allotments
A grazing allotment covers part of this line. Its permittee isn't named here yet.
- Jim Sage80,393acres
The nearest areas
- Granite Pass/Goose Creek TrailIdaho · 295 acres · 2 grazing allotments covering part of it22miles
- Goose Creek Mesa RNAIdaho · 104 acres · 2 grazing allotments covering part of it26miles
- Old Juniper TownsiteIdaho · 3.4 acres · nothing placed inside29miles
- Oregon-California Trail JunctionIdaho · 522 acres · 3 grazing allotments covering part of it32miles
- Substation TractIdaho · 438 acres · nothing placed inside42miles
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 Jim Sage Canyon RNA. 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