New Mexico · Area of Critical Environmental Concern
Black Grama
BLM found a natural system, a wildlife resource and a natural process here, and its plan calls for special management. BLM's records place no claim, lease or right of way inside the line today, and six grazing allotments cover part of it. It covers 3,558 acres and was designated May 3, 2006, in the McGregor Range 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 6 grazing allotments below aren't marked.Grazing allotments
6 grazing allotments cover part of this line. Their permittees aren't named here yet.
- UNIT 719,718acres
- UNIT 1318,926acres
- UNIT 1512,948acres
- Horn Arroyo4,741acres
- Black Grama ACEC985acres
- Unalotted880acres
The nearest areas
- Alamo MountainNew Mexico · 2,530 acres · 2 grazing allotments covering part of it22miles
- Cornudas MountainNew Mexico · 853 acres · 2 grazing allotments covering part of it25miles
- Wind MountainNew Mexico · 2,310 acres · at least 125 active mining claims, 4 grazing allotments covering part of it28miles
- Sacramento EscarpmentNew Mexico · 5,425 acres · 2 rights of way, 5 grazing allotments covering part of it34miles
- Organ/Franklin MountainsNew Mexico · 36,667 acres · 43 rights of way, 6 grazing allotments covering part of it43miles
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 Black Grama. 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