Ansel Adams, Half Dome, Merced River, Winter, Yosemite National Park, California, 1938. Gelatin silver print, image size is 7 5/8 x 9 5/8 inches (19.4 x 24.5 cm); mount size is 13 3/8 x 16 3/8 inches ...

But for those who are well prepared, have advanced paddling skills, and don’t venture out alone, winter kayaking and canoeing can be a peaceful experience in a surreal, frozen landscape.

Paul Chamberlain has lived near the Merced and San Joaquin rivers for about 20 years. He said his neighbors are concerned about rising waters. "There's a trailer park that's completely flooded out.