Colorado Winter

The West’s water security is wrapped up in snow. When it melts, it becomes drinking and irrigation water for millions throughout the region. A high snowpack lets farmers, skiers and water managers breathe a sigh of relief, while a low one can spell long-term trouble.

A tougher set of winter traction rules passed by state lawmakers this year didn’t stop some drivers from getting stuck and snarling traffic on Interstate 70 for several hours Wednesday and Thursday.