Dillon Reservoir – sometimes called Lake Dillon – is in Summit County, Colorado, near the ski areas of Copper Mountain, Breckenridge, Arapahoe Basin and Keystone. In the winter, when the more ...

I founded the Dartmouth Flood Observatory in 1993, which moved to the University of Colorado ... a digital map record of the Earth’s changing surface water, including changes related to floods, ...

Lake Powell, the nation’s second-largest reservoir ... River’s water supply — the Colorado Headwaters and the Gunnison region ...