A Sacramento man is presumed dead after being swept over Nevada Fall in Yosemite National Park on Saturday.
Aleh Kalman,19, who'd gone to the park with a church group, was hiking the Mist Trail when the accident occurred, about 2:45 p.m., park officials said.
Kalman, according to park officials, was seen swimming above Nevada Fall, about 150 feet from the edge.
Witnesses told park officials he was swimming back from a rock in the middle of the river when he was swept downstream .
The river was flowing about 500 cubic feet per second.
Nevada Fall drops 620 feet and is located upsteram of Vernal Fall.
Park ground teams and a California Highway Patrol helicopter searched the area until nightfall.
The Mist Trail, from the footbridge above Emerald Pool to the top of Nevada Fall, was closed Sunday as search teams -including 20 search-and-rescue personnel and three dog teams -looked for the man along the river's banks.
"Although the park received only 50 percent of normal snowpack, rivers within the park continue to run at high levels this time of the year. Additionally, the water remains extremely cold and will be throughout the year," park officials said in a prepared statement.
Deaths around Yosemite's waterfalls have become disturbingly common in recent years, as careless or reckless park goers ignore signs warning of cold and fast moving waters.
In early May, a Minnesota man, apparently photographing the waterfalls, fell to his death at Vernal Fall.