Arizona · Area of Critical Environmental Concern
Bullhead Bajada Natural & Cultural
BLM found a wildlife resource, a cultural value and a historic value here, and its plan calls for special management. BLM's records place at least 123 active mining claims (and 1 more BLM lists as Filed) and 6 rights of way inside the line today. It covers 7,087 acres and was designated May 10, 2007, in the Lake Havasu RMP. 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
Who holds the claims
At least 124 claims sit inside this line: 123 active and 1 filed and pending, 123 with a holder BLM names and 1 with a claimant BLM withholds under the Privacy Act. BLM lists 123 as Active and 1 as Filed.
- GOLDEN VERTEX CORP123claims
- Names withheld by BLM (private individuals)1claim
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 rights of way
6 rights of way sit inside the line. BLM files 4 under non-energy facilities, 1 under fiber optic facilities and 1 under other energy facilities.
- MOHAVE ELECTRIC COOP2rights of way
- MOHAVE CNTY FLOOD CONTROL DI1right of way
- MOHAVE COUNTY (Arizona) - FLOOD CONTROL DISTRICT1right of way
- BERMUDA WATER CO1right of way
- BULLHEAD CITY, CITY OF (Arizona)1right of way
The nearest areas
- Black Mountains Ecosystem ManagementArizona · 133,225 acres · at least 1,122 active mining claims and 263 more BLM lists as Filed or Under Review, 40 rights of way, 9 grazing allotments covering part of it8miles
- Dead MountainsCalifornia · 28,563 acres · 5 rights of way15miles
- Beale Slough Riparian & CulturalArizona · 2,206 acres · 3 rights of way23miles
- Bigelow ChollaCalifornia · 5,749 acres · 1 right of way25miles
- Piute-FennerCalifornia · 178,838 acres · at least 4 active mining claims and 1 more BLM lists as Filed, 14 rights of way26miles
More from BLM's Arizona office
Every area BLM's Arizona 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 Bullhead Bajada Natural & Cultural. 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