Los Angeles District Header


Home > Missions > Formerly Used Defense Sites  > Kofa National Wildlife Refuge


FUDS Program Links

Safety is a Priority

Follow the 3Rs of Explosives Safety
if you suspect you may have come
across a military munition.

Recognize – when you may have
come across a munition, and that
munitions are dangerous.
Retreat – do not approach, touch,
move, or disturb a suspect munition,
but carefully leave the area.
Report – immediately what was found
to local law enforcement – call 911.

Kofa National Wildlife Refuge

Kofa National Wildlife Refuge is located in southwestern Arizona between the city of Yuma and the town of Quartzsite in La Paz and Yuma counties. Shortly after the United States entered World War II, 4 million acres of public land was acquired by the Department of the Army from the Department of the Interior in the state of Arizona. The land became the Laguna Maneuver Area portion of the California-Arizona Maneuver Area.

From 1942 to 1944, the California-Arizona Maneuver Area was used for training infantry and
mechanized units to live and fight in the desert; test and develop suitable equipment; and develop tactical doctrine, techniques, and training methods for desert warfare. The 13-week training program at the California-Arizona Maneuver Area familiarized soldiers with weapons such as small arms, mortars, grenades, artillery, rockets, booby traps and land mines.

The Kofa National Wildlife Refuge, comprising 668,161 acres of land, was located within the
Laguna Maneuver Area portion of the California-Arizona Maneuver Area. When the California-
Arizona Maneuver Area was declared surplus in 1944, most of the land was returned to the
Department of the Interior including Kofa National Wildlife Refuge.

Today, the property is managed by the U.S. Fish & Wildlife Service as the Kofa National
Wildlife Refuge. According to the U.S. Fish & Wildlife Service website, more than 80 percent of the refuge is designated as wilderness. It offers visitors the opportunity to enjoy wildlife
watching, photography, hiking, camping and limited hunting.

The U.S. Army Corps of Engineers began investigating the Kofa National Wildlife Refuge in
1993 through the Formerly Used Defense Sites, or FUDS, Program. Since that time the Corps of
Engineers has been investigating the property for munitions that may remain from previous
military training activities. The Kofa National Wildlife Refuge FUDS property has been divided
into eight projects. This website provides information on the following projects: Restricted
Areas, Castle Dome Mountain Ordnance Area, King Valley Impact Area, Maneuver
Area/Vehicular Access, Hidden Valley Practice Landmine Area, Southeastern Impact Area,
McPherson Pass Practice Landmine Area and Maneuver Area/Small Arms.

Contact Information

For more information about the Kofa National Wildlife Refuge projects, please call the U.S. Army Corps of Engineers, Los Angeles District Public Affairs Office at 213-452-3921.

To learn more about the U.S. Army Corps of Engineers FUDS Program, please click here.