Idaho · Area of Critical Environmental Concern
Oregon-California Trail Junction
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 522 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 3 grazing allotments below aren't marked.Grazing allotments
3 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Raft River6,418acres
- Dale Pierce6,179acres
- Kunau6,091acres
The nearest areas
- Bowen Canyon Bald Eagle SanctuaryIdaho · 2,298 acres · 2 grazing allotments covering part of it27miles
- Substation TractIdaho · 438 acres · nothing placed inside30miles
- Jim Sage Canyon RNAIdaho · 654 acres · a grazing allotment covering part of it32miles
- Old Juniper TownsiteIdaho · 3.4 acres · nothing placed inside34miles
- Granite Pass/Goose Creek TrailIdaho · 295 acres · 2 grazing allotments covering part of it50miles
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 Oregon-California Trail Junction. 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