New Mexico · Area of Critical Environmental Concern
Cedar Hill
BLM found a cultural value, a scenic value and a historic value here, and its plan calls for special management. BLM's records place 4 oil and gas leases and 41 rights of way inside the line today, and a grazing allotment covers part of it. It covers 1,937 acres and was designated September 1, 2003, in the Farmington 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
41 rights of way sit inside the line. BLM files 36 under oil & gas facilities, 4 under other energy facilities and 1 under non-energy facilities.
- ENTERPRISE FIELD SERVICES LLC11rights of way
- WILLIAMS FOUR CORNERS LLC8rights of way
- HILCORP SAN JUAN LLC7rights of way
- *ENTERPRISE FIELD SERVICES LLC4rights of way
- FARMINGTON, CITY OF (New Mexico)3rights of way
- VAL VERDE GAS GATHERING CO LP3rights of way
- Enterprise Field Services LLC2rights of way
- FARMINGTON CITY OF1right of way
- WILLIAMS GAS & FLD SVCS1right of way
- WILLIAMS FIELD SERVICES CO1right of way
The oil and gas leases
4 active oil and gas leases sit inside the line. 4 of them took effect before the area was designated on September 1, 2003.
- Holder not listed by BLM2leases
- HILCORP SAN JUAN LLC2leases
Grazing allotments
A grazing allotment covers part of this line. Its permittee isn't named here yet.
- Lonetree Mountain 15,658acres
The nearest areas
- Morris 41New Mexico · 95 acres · 1 right of way, 2 grazing allotments covering part of it13miles
- River TractsNew Mexico · 2,271 acres · 4 oil and gas leases, 36 rights of way, 11 grazing allotments covering part of it15miles
- Simon CanyonNew Mexico · 3,959 acres · 3 oil and gas leases, 35 rights of way, a grazing allotment covering part of it18miles
- Simon RuinNew Mexico · 48 acres · a grazing allotment covering part of it19miles
- Reese Canyon Research Natural AreaNew Mexico · 2,351 acres · 1 oil and gas lease, 47 rights of way, 2 grazing allotments covering part of it19miles
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 Cedar Hill. 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