It was a busy holiday weekend for conservation officers in the White Mountains, where the New Hampshire Fish and Game Department reported rescuing at least six lost or stranded hikers — including a father and son who had become disoriented on Mount Washington in a storm.

Ronald Proulx, 52, of Epsom, N.H., and Corey Proulx, 25, of Manchester, N.H., who were on the Jewell Trail on Friday, had to camp overnight above the treeline. They stayed in a tent with the intention of calling for help Saturday morning, the Fish and Game Department said.

By then, Corey Proulx found that his father was suffering from mild hypothermia and could not continue. Instead, he hiked to the summit of the mountain by himself around 10 a.m. Saturday and asked for help from state park staff.

Rescuers from the Fish and Game Department hiked down from the summit to Ronald Proulx, warmed him up, and helped him hike the 1¼ miles to the Mt. Washington Auto Road, where the Proulxes caught a ride down to their own vehicle at a trailhead.

As that rescue concluded, the Fish and Game Department got a call for another injured hiker near the summit of Mount Jackson in nearby Bean’s Grant.

Keith Champagne, 45, of Mansfield Center, Conn., had hurt his lower leg while descending, and couldn’t continue. Officials found him by 7:30 p.m. and took him via ambulance to Littleton Regional Hospital, where he arrived around 11:30 p.m.

A woman was also hurt Saturday near the base of nearby Arethusa Falls in Crawford Notch State Park. Jennifer Butnym, 44, of Hudson, N.H., slipped and hurt her right ankle while hiking with family. She could not walk, so rescuers came to carry her down to a parking area.

The rescue party arrived at 2:20 p.m., slightly less than two hours after Butnym was hurt. They reached the trailhead at 5:05 p.m., and Butnym was taken to a hospital.

On Sunday, rescuers used ATVs to ride up a ski trail on Mount Washington, where they found a Canadian woman who injured her leg about a half-mile from the summit.

Dianna Marafioti, 34, of Toronto, had been hurt hours before rescuers arrived, and eventually got a ride down to an Appalachian Mountain Club lodge in Pinkham Notch. From there, she sought treatment on her own, authorities said.

The rescue came amid a hectic day for fish and game officers, who also were contending with two serious ATV crashes elsewhere.

Earlier in the day, a state parks worker found another hiker hurt near the Lion’s Head/Tuckerman Ravine Trail, and authorities also had a report of a group of lost hikers who eventually found their way.

Another hiker was rescued Sunday in Lincoln, after she hurt her leg descending Bondcliff Trail. Initially, she was concerned that she would not be able to continue.

Because of her remote location, however, the woman, identified as 45-year-old J. Forrest Crooks of Concord, N.H., decided to push forward with the help of a companion and a US Forest Service ranger who had happened upon them. Conservation officers eventually found them, and took her out of the woods to safety.

Another rescue took place outside of the White Mountains, in Alton, N.H., on Sunday.

A Saugus woman got lost on Mount Major after she left a trail in an effort to find her dog.

Madeline Fruciano, 48, called 911, which helped rescuers find her coordinates.

Andy Rosen can be reached at andrew.rosen@globe.com.