Oregon · Area of Critical Environmental Concern
South Bull Canyon
BLM found a natural system and a wildlife 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 three grazing allotments cover part of it. It covers 771 acres and was designated September 1, 2002, in the Southeastern Oregon RMP. 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.
- NORTH STAR MTN106,283acres
- BONEY BASIN22,921acres
- BRIDGE CREEK15,387acres
The nearest areas
- Lake RidgeOregon/Washington · 3,860 acres · 2 grazing allotments covering part of it8miles
- Black Canyon - VOregon/Washington · 2,600 acres · 3 grazing allotments covering part of it14miles
- Dry Creek GorgeOregon/Washington · 16,106 acres · 4 grazing allotments covering part of it24miles
- Stockade MountainOregon/Washington · 1,768 acres · at least 25 active mining claims and 2 more BLM lists as Filed, a grazing allotment covering part of it25miles
- Castle RockOregon/Washington · 22,811 acres · 1 right of way, 3 grazing allotments covering part of it27miles
More from BLM's Oregon/Washington office
Every area BLM's Oregon/Washington 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 South Bull 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