Department of the Interior

United States Department of the Interior was a pre-War department of the United States government. The Department of the Interior was a federal executive department responsible for the conservation of most federal lands, natural resources, and other related entities, such as the National Park Service and United States Geological Survey.

Background
One branch was the National Park Service, a division of the Interior Department responsible for the maintenance and protection of several public federal lands such as Acadia, Grand Canyon, Kanawha, and Zion National Parks.

In the 2070s, they worked closely with the Vault-Tec Corporation, providing geological data for the company to construct their vaults. They also made the plans for the Congressional Bunker beneath the Whitespring Resort. In Appalachia, both the Department of the Interior and the Department of Agriculture held lands under their jurisdiction.

During the Great War, the Secretary of the Interior took refuge in the Whitespring bunker alongside the Secretary of the Treasury and Secretary of Agriculture Thomas Eckhart, though died shortly after arrival.

Appearances
The Department of the Interior is mentioned in Fallout 3, Fallout: New Vegas, its add-on Honest Hearts, Fallout 4 and add-on Far Harbor, and Fallout 76, and its update Wastelanders.

Behind the scenes
The Department of the Interior would have been mentioned in the canceled Fallout 3 project Van Buren.