Adjacent to the storage facility is the now-closed Seneca Army Airfield, whose long runway could handle large cargo aircraft.

[1] During the 1940s, the Army stored radioactive materials in connection with the Manhattan Project in igloos E0801 through E0811, on the south end of the Depot.

Despite no formal confirmation from the Department of Defense, it is known that during the cold war the depot held the largest stockpile of Army nuclear weapons in the country.

[citation needed] In early 2007, the Cornell 2007 DARPA Urban Challenge Team began using the depot's private roads to test its autonomous vehicles.

An article dated July 20, 2009 in the Watertown Daily Times stated that the Fort Drum-based 10th Mountain Division (Light Infantry) would soon start using the depot for combat training.

[6] A portion of the southern end of the base was transferred to New York State and used for the construction of Five Points Correctional Facility, a maximum security prison.

Most fence climbers were released after being given "ban and bar letters" telling them they would be charged with trespass if they were apprehended inside the depot again.

Seneca White Deer, a non-profit group, received clearance to run limited bus tours in 2006, 2009, and 2012.

[7] In 2016, the property was sold to local businessman Earl Martin of Seneca Iron Works for $900,000 and established as Deer Haven Park, LLC.