Moon Lake Reservoir is a man-made lake located in the Ashley National Forest in northeastern Utah. The reservoir was constructed in the early 1900s to store water for agricultural purposes in the Uinta Basin. The water in the reservoir comes from snowmelt and surface runoff from surrounding mountains. The reservoir is also fed by the White River and tributaries. The water is used for irrigation in the surrounding agricultural areas and for recreational purposes such as fishing, camping, and boating. The reservoir has a capacity of over 76,000 acre-feet and covers an area of 2,800 acres. The surrounding area is popular for outdoor activities, including hiking, hunting, and snowmobiling in the winter. Moon Lake Reservoir is an important source of water for the region and provides significant benefits to the local communities.