Utah · Area of Critical Environmental Concern
Lower Green River
BLM found a natural system, a scenic value and a fish resource here, and its plan calls for special management. BLM's records place 5 oil and gas leases and 2 rights of way inside the line today, and five grazing allotments cover part of it. It covers 6,988 acres and was designated October 31, 2008, in the Vernal Field Office 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
2 rights of way sit inside the line. BLM files 1 under non-energy facilities and 1 under oil & gas facilities.
- VERNAL FIELD OFFICE1right of way
- WAPITI ROCKY MOUNTAIN LLC1right of way
The oil and gas leases
5 active oil and gas leases sit inside the line. 5 of them took effect before the area was designated on October 31, 2008.
- Holder not listed by BLM2leases
- WAPITI ROCKY MOUNTAIN LLC2leases
- UTAH GAS OP LTD1lease
Not counted: 1 more lease BLM lists as Interim.
Grazing allotments
5 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Green River139,486acres
- Little Desert49,361acres
- Wetlands18,481acres
- Green River Amp9,608acres
- Green River Bottoms7,159acres
The nearest areas
- Pariette WetlandsUtah · 10,594 acres · 23 oil and gas leases, 11 rights of way, 2 grazing allotments covering part of it11miles
- Nine Mile CanyonUtah · 44,257 acres · 7 oil and gas leases, 14 rights of way, 14 grazing allotments covering part of it18miles
- Nine Mile CanyonUtah · 26,108 acres · 2 oil and gas leases, 10 rights of way, 14 grazing allotments covering part of it20miles
- Lears CanyonUtah · 1,374 acres · 1 oil and gas lease, 2 grazing allotments covering part of it32miles
- Red Mountain-Dry ForkUtah · 24,326 acres · at least 199 active mining claims and 13 more BLM lists as Filed, 53 rights of way, 14 grazing allotments covering part of it47miles
Next to it
Nine Mile Canyon Area of Critical Environmental Concern and Pariette Wetlands Area of Critical Environmental Concern touch the line.
More from BLM's Utah office
Every area BLM's Utah 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 Lower Green River. 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