Military Aviation and Installation Assurance Siting Clearinghouse, Office of the Assistant Secretary of Defense for Sustainment

Geographical Areas of Concern

Section 358 of the National Defense Authorization Act of 2011, as amended, states that DoD shall identify geographic areas selected as proposed locations for projects filed, or which may be filed in the future, with the Secretary of Transportation pursuant to section Title 49 U.S.C., Section 44178, where such projects could have an adverse impact on military operations and readiness.

Energy developers are encouraged to consult the maps accessible on this page early in their siting decision processes, and if there is a potential impact, to consult the Clearinghouse for an informal review. The maps designate geospatial areas where the introduction of structures associated with projects filed with the FAA pursuant to Title 49 U.S.C., Section 44178 could have an adverse impact on military operations and readiness. Pursuant to Part 211 of Title 32 CFR, adverse impacts could impair or degrade the ability of the armed forces to perform warfighting missions, conduct military operations, and assure readiness, including flight operations, research, development, testing, and evaluation and training. Note that additional RAIMORAs are in development and this is not a complete depiction of all possible RAIMORAs within a given area.

DoD-Approved Geographical Areas of Concern
Geographical Areas of Concern maps show specific mission areas where wind development would present a high risk of impact to military operations. Other military installations and areas may be located near the Geographical Areas of Concern, so any project contemplated within or in the vicinity of a specific Geographical Areas of Concern should also seek an informal review via the Clearinghouse as soon as possible. The DoD will continually update Geographical Areas of Concern maps as they are developed and approved.

Low-Level Military Airspace
Military training routes and special use airspace with a floor of 1500 feet or below is considered low-level military airspace. Low-level military airspace is particularly susceptible to impacts from tall structures and any proposed structure will need to be carefully analyzed for potential impacts to DoD.

Hazard Impact Maps
Military Departments often develop maps depicting areas of concern or interest. These maps can be found on the Department’s website and should be consulted in the early stages of energy development.

If there are any questions on the information found on this page, please contact the Clearinghouse at


DoD-Approved RAIMORAs

Low-Level Military Airspace

Hazard Impact Maps

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