Willow Creek Dam (National ID # CO01670) is a dam in Grand County, Colorado.

The earthen dam was constructed between 1951 and 1953 by the United States Bureau of Reclamation, with a height of 127 feet (39 m), and a length of 1,100 feet (340 m) at its crest.

[1] It impounds Willow Creek for irrigation water storage and hydroelectric power, part of the Bureau's larger Colorado-Big Thompson Project.

The dam is owned by the Bureau and operated by the local Northern Colorado Water Conservancy District.

The reservoir it creates, Willow Creek Reservoir, has a normal water surface of 303 acres (123 ha), and has a maximum capacity of 11,177 acre-feet (13,787,000 m3).