Most of Lake Mead’s water has been on quite the journey. Much of it was born on the western slope of the Rocky Mountains.

How much snow hits the Rockies tells us how much water will come to Lake Mead.

“After a pretty good start to the season, we were looking pretty close to normal, or even slightly above normal, in a lot of areas at the beginning of January,” says Paul Miller with the Colorado Basin River Forecast Center, which watches the snow and the river.