The heaviest snow melt in Utah's history turned a half dozen streets in Salt Lake City into rivers today, contaminated drinking water for 3,000 families and prompted officials to evacuate 100 patients from two nursing homes.

Officials said no injuries were reported from the flooding and initial damage reports were minimal.

Near-record warm temperatures were recorded throughout the West, rapidly melting mountain snow and swelling streams in parts of Wyoming and Colorado. In Oregon, Portland and Salem reached 100 degrees for the first time ever in May.

The runoff from the Wasatch Mountains north of Salt Lake City swelled streams, leading officials to close all roads in Utah County.

Volunteers in dozens of communities joined in filling sandbags to keep the raging flood waters away from homes and businesses.

A state of emergency declared Friday by Salt Lake City Mayor Ted Wilson canceled the holiday weekend for many city workers, who joined sandbagging efforts and built a 16-block-long dike along one of Salt Lake's busiest streets.

By tonight, runoff flowed down State Street, Salt Lake City's busiest street and the center of the downtown business district.

Ogden Mayor Steve Dirks today declared a state of emergency for that city.