Wyoming · Area of Critical Environmental Concern
Upper Owl Creek ACEC
BLM found a natural system, a wildlife resource, a scenic value and a fish resource here, and its plan calls for special management. BLM's records place 1 right of way inside the line today, and 11 grazing allotments cover part of it. It covers 14,274 acres and was designated September 14, 1998, in the Grass Creek 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
1 right of way sits inside the line. BLM files 1 under non-energy facilities.
- OWL CREEK RANCH HOLDINGS LLC1right of way
Grazing allotments
11 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Allotment USFS-GRZ-10036.01033719,975acres
- THREE PEAKS ANCHOR18,465acres
- BASIN16,066acres
- CURTIS15,564acres
- ROCK CREEK10,791acres
- Allotment USFS-GRZ-10039.0103377,775acres
- OWL CREEK4,079acres
- SLAB CREEK3,591acres
- THREE PEAKS2,384acres
- Allotment USFS-GRZ-10031.0103371,974acres
- SFNF1,730acres
The nearest areas
- East Fork ACECWyoming · 36,563 acres · 4 rights of way, 6 grazing allotments covering part of it22miles
- Whiskey Mountain ACECWyoming · 13,879 acres · 2 rights of way, 6 grazing allotments covering part of it30miles
- Carter Mountain ACECWyoming · 10,846 acres · 1 right of way, 8 grazing allotments covering part of it36miles
- Sheep Mountain ACECWyoming · 25,978 acres · 9 rights of way, 15 grazing allotments covering part of it52miles
- New Fork Potholes ACECWyoming · 1,827 acres · 4 rights of way, 4 grazing allotments covering part of it63miles
More from BLM's Wyoming office
Every area BLM's Wyoming 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 Upper Owl Creek 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