Oregon · Area of Critical Environmental Concern
Guano Creek-Sink Lakes
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 a grazing allotment covers part of it. It covers 11,186 acres and was designated November 4, 2003, in the Lakeview 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 grazing allotment below isn't marked.Grazing allotments
A grazing allotment covers part of this line. Its permittee isn't named here yet.
- BEATY BUTTE551,902acres
The nearest areas
- High LakesOregon/Washington · 38,952 acres · 3 rights of way, 4 grazing allotments covering part of it7miles
- Spanish LakeOregon/Washington · 4,695 acres · 4 grazing allotments covering part of it17miles
- Fish Creek RimOregon/Washington · 8,718 acres · 4 grazing allotments covering part of it17miles
- Warner WetlandsOregon/Washington · 51,847 acres · 1 right of way, 7 grazing allotments covering part of it22miles
- Rahilly-GravellyOregon/Washington · 18,718 acres · 4 grazing allotments covering part of it22miles
Next to it
High Lakes Area of Critical Environmental Concern touches the line.
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 Guano Creek-Sink Lakes. 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