Dillon Reservoir Dillon Reservoir Dillon Reservoir, sometimes referred to as Lake Dillon, is a large fresh water reservoir located in Summit County, Colorado, south of I-70 and bordered by the towns of Frisco, Silverthorne, and Dillon. It is a reservoir for the city of Denver, and its waters are under the control of Denver Water. Popular ski areas are close to the reservoir, including Copper Mountain, Keystone, Arapahoe Basin, and Breckenridge. In 1859, a large party of gold-seekers led by Ruben Spalding discovered gold near the headwaters of the Blue River, which prompted a population surge in Summit County, Colorado. By October
State Street (Salt Lake County) side. State Street north of Vine Street in Murray was used as part of the route for wagons carrying quartz monzonite quarried at the mouth of Little Cottonwood Canyon for use in building the Salt Lake Temple, until railroads provided an easier route. Streetcars also extended south along the street as far as Murray in the early 20th century. When the U.S. Highway system was unveiled in 1926, state street carried US-91 through the Salt Lake Valley. In the 1930s, US-89 was extended, using State Street. US 91 was truncated in 1974, however, State Street remains signed as US 89