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Idaho · Area of Critical Environmental Concern

Boise Front

BLM's map records no relevance finding for this one. BLM's records place at least 7 active mining claims (and 5 more BLM lists as Filed) and 21 rights of way inside the line today, and seven grazing allotments cover part of it. It covers 15,093 acres and was designated August 18, 2023, in the Four Rivers RMP 2023. In the plan's name, RMP stands for resource management plan.

Acres15,093
DesignatedAug 18, 2023Four Rivers RMP 2023
BLM foundNone recordedBLM's map lists no finding for this one.
Inside, at least35claims, rights of way and allotments, and 5 more claims BLM lists as Filed

The line

Boise Front
Mining claim, 3Claimant withheld by BLM, 4Filed, 4Filed, claimant withheld, 1Right of way, 21
Ground: USGS The National Map, topographic tiles. Boundaries: BLM's own, read Oct 20, 2026. 28 marks are where BLM's own maps draw them; 5 claims are placed at the middle of the section their land description names, not at the stakes on the ground. Hover or tap one for its holder. The 7 grazing allotments below aren't marked.

Who holds the claims

At least 12 claims sit inside this line: 7 active and 5 filed and pending, 7 with a holder BLM names and 5 with a claimant BLM withholds under the Privacy Act. BLM lists 7 as Active and 5 as Filed.

  • Names withheld by BLM (private individuals)5claims
  • Stein, LLC4claims
  • ASSOCIATED FACILITIES CORPORATION2claims
  • BLACK HORNET MINING AND MILLING CO LLC1claim

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

21 rights of way sit inside the line. BLM files 15 under non-energy facilities and 6 under other energy facilities.

  • IDAHO POWER CO8rights of way
  • BOISE CITY OF3rights of way
  • BLM BOISE DIST2rights of way
  • COE1right of way
  • QWEST CORP1right of way

Grazing allotments

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

  • Allotment USFS-GRZ-10050.010312253,085acres
  • Boise Front13,387acres
  • No Unit6,395acres
  • Dechambeau Individual4,500acres
  • Fenwick Place552acres

The nearest areas

More from BLM's Idaho office

Every area BLM's Idaho 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 Boise Front. 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