New Mexico · Area of Critical Environmental Concern
Northern Peloncillo Mountains
BLM found 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 781 acres and was designated December 1, 1993, in the Mimbres 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.
- High Lonesome23,320acres
- Braidfoot9,180acres
- Little Doubtful2,875acres
The nearest areas
- Lordsburg Playa Research Natural AreaNew Mexico · 4,515 acres · a grazing allotment covering part of it8miles
- Granite GapNew Mexico · 1,727 acres · 2 grazing allotments covering part of it19miles
- Gila Lower BoxNew Mexico · 6,257 acres · 1 right of way, 6 grazing allotments covering part of it22miles
- Bowie Mountain ScenicArizona · 4,271 acres · at least 1 mining claim BLM lists as Under Review, 1 right of way, 3 grazing allotments covering part of it28miles
- Antelope Pass Research Natural AreaNew Mexico · 8,652 acres · at least 32 active mining claims and 101 more BLM lists as Filed or Under Review, 2 rights of way, 3 grazing allotments covering part of it29miles
More from BLM's New Mexico office
Every area BLM's New Mexico 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 Northern Peloncillo Mountains. 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