Arizona · Area of Critical Environmental Concern
Hualapai Mountain Research Natural Area
BLM found a natural system, a wildlife resource and a natural process here, and its plan calls for special management. BLM's records place at least 9 mining claims BLM lists as Filed and 1 right of way inside the line today, and four grazing allotments cover part of it. It covers 4,492 acres and was designated March 7, 1995, in the Kingman 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 9 claims sit inside this line: 0 active and 9 filed and pending, 9 with a holder BLM names. BLM lists 9 as Filed. None of the 9 claims was located before the area was designated.
- BORIANA MINERALS, INC9claims
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
1 right of way sits inside the line. BLM files 1 under non-energy facilities.
- MOHAVE COUNTY (Arizona) - FLOOD CONTROL DISTRICT1right of way
Grazing allotments
4 grazing allotments cover part of this line. Their permittees aren't named here yet.
- La Cienega169,537acres
- Yellow Pine59,546acres
- Boriana Unit A39,821acres
- Hibernia Peak29,477acres
The nearest areas
- White-Margined Penstemon ReserveArizona · 35,597 acres · at least 92 active mining claims and 11 more BLM lists as Filed, 7 rights of way, 3 grazing allotments covering part of it13miles
- Carrow-Stephens RanchesArizona · 499 acres · 2 rights of way, a grazing allotment covering part of it20miles
- 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 it31miles
- Wright-Cottonwood Creeks Riparian And CulturalArizona · 30,588 acres · at least 11 active mining claims and 1 more BLM lists as Filed, 1 right of way, 5 grazing allotments covering part of it31miles
- McCracken Desert Tortoise HabitatArizona · 33,225 acres · at least 13 active mining claims, 1 right of way, 3 grazing allotments covering part of it33miles
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 Hualapai Mountain Research Natural Area. 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