Idaho · Area of Critical Environmental Concern
Herd Creek Watershed
BLM found a natural system here, and its plan calls for special management. BLM's records place 3 rights of way inside the line today, and four grazing allotments cover part of it. It covers 16,887 acres and was designated July 29, 1999, in the Challis RMP 1999. 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
3 rights of way sit inside the line. BLM files 3 under non-energy facilities.
- A private individual, name withheld by this site1right of way
- SALMON FIELD OFFICE1right of way
- IDAHO DEPT OF FISH & GAME1right of way
Grazing allotments
4 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Mountain Springs98,441acres
- Herd Creek53,098acres
- Road Creek10,206acres
- Sage Creek7,390acres
The nearest areas
- Herd Creek Watershed RNAIdaho · 1,056 acres · 2 grazing allotments covering part of it5miles
- Sand Hollow RNAIdaho · 3,332 acres · a grazing allotment covering part of it7miles
- Peck's Canyon RNAIdaho · 782 acres · a grazing allotment covering part of it8miles
- East Fork Salmon River Bench RNAIdaho · 78 acres · at least 2 mining claims BLM lists as Filed, 2 grazing allotments covering part of it12miles
- Thousand Springs RNAIdaho · 233 acres · nothing placed inside13miles
Next to it
Herd Creek Watershed Research Natural 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 Herd Creek Watershed. 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