Record Sierra Snowmelt Turns California Rivers Into Deadly Torrents

California’s rivers are running high, fast and cold due to melting snowpack, leading to dangerous conditions and several deaths.
At least seven people have died in California’s rivers this spring, prompting warnings for Memorial Day weekend.
Sacramento has already seen 20 water rescues this year, nearly matching last year's total.
Reservoirs must release water to make room for snowmelt, altering river conditions and endangering anyone entering the water.
Officials urge people to stay out of rivers and wear life jackets if going in as cold, swift water can be deadly.