Peña Blanca Lake west of Nogales has been re-opened after being closed last week as crews battled a wildfire nearby.
Helicopters battling the La Sierra Fire used the lake to dip their water buckets.
The Coronado National Forest said a closure of the area where the fire was burning has also been lifted. That area was between Walker and Sycamore Canyons south of Ruby Road to the international border.
Motorists might still see firefighting vehicles in the area checking on smoke sources.
The wildfire, which began in Mexico, burned nearly 5,000 acres but is about 90 percent contained on the U.S. side. Most personnel have been released from the fire, but crews are in the area doing mop up and patrolling.
