Idaho · Area of Critical Environmental Concern
North Menan Butte RNA
BLM found a natural system and a natural process here, and its plan calls for special management. BLM's records place 2 rights of way inside the line today. It covers 344 acres and was designated November 29, 1985, in the Medicine Lodge RMP 1985. 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 2 under non-energy facilities.
- SAFELINK INTERNET LLC1right of way
- UNION PACIFIC RAILROAD COMPANY*1right of way
The nearest areas
- North Menan ButteIdaho · 781 acres · 3 rights of way<1miles
- Reid Canal Island RNAIdaho · 29 acres · nothing placed inside11miles
- Nine Mile KnollIdaho · 41,641 acres · 10 rights of way, 8 grazing allotments covering part of it14miles
- St. Anthony Sand Dunes RNAIdaho · 1,824 acres · a grazing allotment covering part of it15miles
- Snake RiverIdaho · 144,078 acres · at least 1 active mining claim and 4 more BLM lists as Filed, 89 rights of way, 61 grazing allotments covering part of it16miles
Next to it
North Menan Butte Area of Critical Environmental Concern touches the line.
More from BLM's Idaho office
Every area BLM's Idaho 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 North Menan Butte RNA. 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