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Montana · Area of Critical Environmental Concern

Everson Creek

BLM found a cultural value here, and its plan calls for special management. BLM's records place at least 4 active mining claims and 5 rights of way inside the line today, and eight grazing allotments cover part of it. It covers 8,815 acres and was designated February 7, 2006, in the Dillon RMP (2006). In the plan's name, RMP stands for resource management plan.

Acres8,815
DesignatedFeb 7, 2006Dillon RMP (2006)
BLM founda cultural value
Inside, at least17claims, rights of way and allotments

The line

Everson Creek
Mining claim, 4Right of way, 5
Ground: USGS The National Map, topographic tiles. Boundaries: BLM's own, read Oct 20, 2026. 5 marks are where BLM's own maps draw them; 4 claims are placed at the middle of the quarter section their land description names, not at the stakes on the ground. Hover or tap one for its holder. The 8 grazing allotments below aren't marked.

Who holds the claims

At least 4 claims sit inside this line: 4 active, 4 with a holder BLM names. BLM lists 4 as Active.

  • IDAHO FALLS GEM & MINERAL SOCIETY4claims

BLM's mining rules list designated ACECs among the places where mining that disturbs the surface beyond casual use needs a plan of operations BLM approves. Exploration of five acres or less can go ahead on a notice instead.

The rights of way

5 rights of way sit inside the line. BLM files 5 under non-energy facilities.

  • BUTTE FIELD OFFICE5rights of way

Grazing allotments

8 grazing allotments cover part of this line. Their permittees aren't named here yet.

  • SOUTH BLACK CANYON10,339acres
  • Allotment USFS-GRZ-10060.0103499,344acres
  • HORSE PRAIRIE CUSTODIAL8,461acres
  • Allotment USFS-GRZ-10059.0103496,186acres
  • NORTH BLACK CANYON5,860acres

The nearest areas

More from BLM's Montana/Dakotas office

Every area BLM's Montana/Dakotas office holds

The proposed rule

A proposed rule, RIN 1004-AF53, would change how BLM drafts every land use plan, and how it designates ACECs like Everson Creek. 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

Watch the ruleWhere the rule stands