California · Area of Critical Environmental Concern
Gilham Butte
BLM found a natural system and a natural process here, and its plan calls for special management. Nothing that BLM's records place sits inside the line today. It covers 9,339 acres and was designated November 6, 2024, in the Northwest California Integrated 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
Ground: USGS The National Map, topographic tiles. Boundaries: BLM's own, read Oct 20, 2026.Inside the line
Nothing sits inside this line that BLM's records place: no mining claim, lease, right of way or grazing allotment.
The nearest areas
- Upper MattoleCalifornia · 459 acres · nothing placed inside15miles
- Mill CreekCalifornia · 948 acres · nothing placed inside16miles
- Mattole BeachCalifornia · 798 acres · 1 right of way, 3 grazing allotments covering part of it18miles
- Butte CreekCalifornia · 2,298 acres · 3 rights of way23miles
- Iaqua ButtesCalifornia · 1,112 acres · 3 rights of way34miles
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 Gilham Butte. 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