Dillon Reservoir is a large artificial lake located in Summit County, Colorado. It was created in the 1960s to provide water storage for the Denver Water system and to help manage water supply in the region. The reservoir covers approximately 1,500 acres and has a capacity of around 83,000 acre-feet. The area surrounding Dillon Reservoir offers various recreational activities, including fishing, boating, and hiking. The Dillon Marina provides boat rentals and services, while the scenic views of the Rocky Mountains attract visitors year-round. The reservoir also plays a crucial role in local wildlife habitats.