Oregon · Area of Critical Environmental Concern
Horn Butte
BLM found a wildlife resource and a scenic value here, and its plan calls for special management. BLM's records place 6 rights of way inside the line today, and seven grazing allotments cover part of it. It covers 7,152 acres and was designated April 1, 2015, in the John Day Basin 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
The rights of way
6 rights of way sit inside the line. BLM files 5 under non-energy facilities and 1 under other energy facilities.
- Holder not listed by BLM2rights of way
- BONNEVILLE POWER ADMN2rights of way
- PORTLAND GENERAL ELECTRIC1right of way
- ODOT REGION 41right of way
Grazing allotments
7 grazing allotments cover part of this line. Their permittees aren't named here yet.
- HORN BUTTE16,675acres
- PEBBLE SPRINGS7,126acres
- KIOSK4,763acres
- FOUR MILE CANYON2,397acres
- EUGENE LOGAN JR.1,603acres
- MULKEY1,407acres
- HI-MEADOWS1,311acres
The nearest areas
- Ferry CanyonOregon/Washington · 2,365 acres · 2 grazing allotments covering part of it30miles
- Armstrong CanyonOregon/Washington · 3,882 acres · 1 right of way, a grazing allotment covering part of it42miles
- Yakima River - Columbia River IslandOregon/Washington · 88 acres · nothing placed inside61miles
- McCoy CanyonOregon/Washington · 165 acres · a grazing allotment covering part of it65miles
- North Fork John Day RiverOregon/Washington · 16,808 acres · 3 rights of way, 5 grazing allotments covering part of it65miles
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 Horn Butte. 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