Colorado · Area of Critical Environmental Concern
Grand Hogback ACEC
BLM found a natural system, a cultural value and a scenic value here, and its plan calls for special management. BLM's records place 3 rights of way inside the line today, and three grazing allotments cover part of it. It covers 4,306 acres and was designated October 17, 2024, in the 2024 Colorado River Valley RMP (Supplemental EIS). In the plan's name, RMP stands for resource management plan and EIS for environmental impact statement.
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
3 rights of way sit inside the line. BLM files 3 under non-energy facilities.
- USBR (WESTERN COLORADO AREA OFFICE)2rights of way
- A private individual, name withheld by this site1right of way
Grazing allotments
3 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Elk Park Com2,702acres
- Scutter Gulch799acres
- Jewell477acres
The nearest areas
- Grand Hogback Expansion ACECColorado · 8,801 acres · 1 right of way, 7 grazing allotments covering part of it8miles
- Magpie Gulch ACECColorado · 4,711 acres · 1 oil and gas lease, 6 grazing allotments covering part of it9miles
- Anvil Points ACECColorado · 6,895 acres · 2 oil and gas leases, 6 rights of way, 7 grazing allotments covering part of it9miles
- East Fork Parachute Creek ACECColorado · 7,074 acres · 4 grazing allotments covering part of it13miles
- Trapper/Northwater Creek ACECColorado · 6,291 acres · 1 right of way, 5 grazing allotments covering part of it14miles
More from BLM's Colorado office
Every area BLM's Colorado 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 Grand Hogback ACEC. 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