California · Area of Critical Environmental Concern
Timbered Crater WSA
BLM found a natural system and a natural process here, and its plan calls for special management. BLM's records place no claim, lease or right of way inside the line today, and three grazing allotments cover part of it. It covers 18,051 acres and was designated April 17, 2008, in the Alturas.
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
Ground: USGS The National Map, topographic tiles. Boundaries: BLM's own, read Oct 20, 2026. The 3 grazing allotments below aren't marked.Grazing allotments
3 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Allotment USFS-GRZ-10051.0103119,121acres
- Hot Springs1,132acres
- Day338acres
The nearest areas
- Emigrant TrailsCalifornia · 1,678 acres · 4 rights of way, 7 grazing allotments covering part of it20miles
- Upper Burney Dry Lake and Baker CypressCalifornia · 209 acres · nothing placed inside31miles
- Ash ValleyCalifornia · 1,225 acres · a grazing allotment covering part of it38miles
- Old Growth JuniperCalifornia · 3,146 acres · 4 grazing allotments covering part of it40miles
- Mount DomeCalifornia · 1,510 acres · 3 grazing allotments covering part of it46miles
More from BLM's California office
Every area BLM's California 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 Timbered Crater WSA. 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