That's an interesting arrangement. And one that actually benefits both parties. All that water that Keystone pumps out during a low usage period is stored on the mountain and will return as snowmelt in the spring and summer.Keystone has a long-standing agreement with Denver Water to pump 1,500 acre feet of water directly out of the Roberts Tunnel each ski season. The Roberts Tunnel is Denver Water's 23-mile tunnel under the Continental Divide that moves water from the Dillon Reservoir to the Front Range. The resort sits almost directly over the Tunnel (900 feet below), so it's a sweet deal for the snow-makers at Keystone.
1,500 acre feet of water is almost a half billion gallons H20!