Arizona · Area of Critical Environmental Concern
Lower Gila Terraces And Historic Trails
BLM found a cultural value, a scenic value and a historic value here, and its plan calls for special management. BLM's records place 45 rights of way inside the line today, and 21 grazing allotments cover part of it. It covers 139,110 acres and was designated September 14, 2012, in the Lower Sonoran 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
The rights of way
45 rights of way sit inside the line. BLM files 28 under non-energy facilities and 17 under other energy facilities.
- AZ PUBLIC SERVICE17rights of way
- Holder not listed by BLM3rights of way
- AZ DOT3rights of way
- GILA LAND AND CATTLE2rights of way
- QWEST DBA CENTURYLINK2rights of way
- WASTE MANAGEMENT OF ARIZONA INC1right of way
- NEW DENDORA CANAL CO1right of way
- PHOENIX DISTRICT OFFICE1right of way
- MARICOPA COUNTY (Arizona) - DEPARTMENT OF TRANSPORTATION1right of way
- QWEST CORP DBA CENTURYLINK QC1right of way
- GILA LAND & WATER CO1right of way
- AZ GAME & FISH COMM1right of way
- MARICOPA COUNTY (Arizona) - SUPERVISORS1right of way
- US ARMY - CORPS OF ENGINEERS (AZ/NV OFFICE)1right of way
- ROWLEY MINES LLC1right of way
- ENTERPRISE LAND/WATER1right of way
- MARICOPA COUNTY FLOOD CONTROL1right of way
- PAINTED ROCK RANCHES1right of way
- A private individual, name withheld by this site1right of way
- POWER-BUTTE IRRIG CO1right of way
- SOUTHERN PAC TRANS1right of way
- PALOMA IRRIGATION & DRAINAGE1right of way
- GILLESPIE DAM INVESTMENTS LLC1right of way
Grazing allotments
21 grazing allotments cover part of this line. Their permittees aren't named here yet.
- Beloat176,763acres
- Big Horn169,214acres
- Conley118,422acres
- Gillespie97,492acres
- Artex96,361acres
- Gila River Community68,494acres
- Hazen64,392acres
- Hazen-Shepard35,741acres
- Dendora Valley34,419acres
- Gila Bend Indians32,081acres
- Amavisca28,945acres
- Arnold26,216acres
- Powers Butte22,740acres
- Palo Verde Mountains22,344acres
- Jagow-Kreager13,097acres
- Mariani9,332acres
- Layton6,771acres
- Painted Rock4,690acres
- Trust 13473,796acres
- Sevey2,661acres
- Hyder Ranch571acres
The nearest areas
- Saddle MountainArizona · 55,504 acres · 13 rights of way, 5 grazing allotments covering part of it22miles
- Sears PointArizona · 24,835 acres · 4 rights of way, 6 grazing allotments covering part of it36miles
- Sears Point CoreArizona · 3,680 acres · 2 grazing allotments covering part of it38miles
- Coffeepot BotanicalArizona · 8,891 acres · a grazing allotment covering part of it48miles
- Black ButteArizona · 9,552 acres · 2 grazing allotments covering part of it49miles
Next to it
Sears Point Area of Critical Environmental Concern touches the line.
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 Lower Gila Terraces And Historic Trails. 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