California · Area of Critical Environmental Concern
Bendire's Thrasher
BLM found a wildlife resource here, and its plan calls for special management. BLM's records place at least 1 active mining claim inside the line today, with 71 more BLM lists as Filed. It covers 9,780 acres and was designated September 14, 2016, in the CDCA Plan, as amended by DRECP. In the plan's name, CDCA stands for California Desert Conservation Area and DRECP for Desert Renewable Energy Conservation 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
Who holds the claims
At least 72 claims sit inside this line: 1 active and 71 filed and pending, 72 with a holder BLM names. BLM lists 71 as Filed and 1 as Active.
- CEMEX CALIFORNIA CEMENT LLC70claims
- MOHAVE GOLD & EXPLORATION INC1claim
- MOHAVE GOLD MINING & EXPLORATION1claim
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 nearest areas
- Northen Lucerne Wildlife LinkageCalifornia · 42,452 acres · at least 57 active mining claims and 201 more BLM lists as Filed, 7 rights of way, a grazing allotment covering part of it5miles
- Granite Mountain CorridorCalifornia · 60,175 acres · at least 21 active mining claims and 3 more BLM lists as Filed or Under Review, 17 rights of way, 2 grazing allotments covering part of it11miles
- Juniper FlatsCalifornia · 2,387 acres · a grazing allotment covering part of it15miles
- Brisbane Valley Monkey FlowerCalifornia · 17,981 acres · at least 38 active mining claims and 6 more BLM lists as Filed, 1 right of way, a grazing allotment covering part of it16miles
- Dagget Ridge Monkey FlowerCalifornia · 35,800 acres · at least 87 active mining claims and 14 more BLM lists as Filed, 4 rights of way, 2 grazing allotments covering part of it18miles
Next to it
Northen Lucerne Wildlife Linkage Area of Critical Environmental Concern touches the line.
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 Bendire's Thrasher. 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