The East Zone forms the eastern third of the Upper Colorado River Interagency Fire Management Unit (UCR), which totals 4.5 million acres of federal lands located along the Interstate 70 corridor from the Continental Divide (Eisenhower Tunnel) to the Utah border. The UCR staffs nine engines, one initial attack squad, and one helitack crew. An air tanker base is located in Grand Junction, and a SEAT reload base is located in Rifle. The Unit regularly hosts 12 smokejumpers in Grand Junction.

The UCR responds to about 255 wildfires per year. The Unit exercises the total mobility concept; initial attack resources regularly cross zone boundaries as required to conduct IA operations. During periods of low fire activity, the UCR sends resources and overhead off-unit to wherever they are needed.