Most of the water in the Duchesne River is the result of snowmelt in the Uinta Mountains.
According to the U.S. Bureau of Reclamation, the average unimpaired runoff between 1906 and 2014 was 787,000 acre feet (971,000,000 m³).
In an average year, much of the flow is diverted for irrigation or through the Central Utah Project, which provides water for Salt Lake City and the Wasatch Front, Utah's largest metropolitan area, reducing the flow at the mouth to 378,000 acre feet (466,000,000 m³).
However, in late spring and early summer of wet years the Duchesne River can become a large torrent carrying many thousands of cubic feet of water per second.

The Lake Fork of the Duchesne River is impounded by the Moon Lake Dam, built in 1938 by the Bureau of Reclamation.
Starvation Dam and Soldier Creek Dam, also built by the Bureau of Reclamation, are located on the Strawberry River, the longest tributary of the Duchesne River.
Most of the water in the Duchesne River is the result of snowmelt in the Uinta Mountains. According to the U.S. Bureau of Reclamation, the average unimpaired runoff between 1906 and 2014 was 787,000 acre feet (971,000,000 m³). In an average year, much of the flow is diverted for irrigation or through the Central Utah Project, which provides water for Salt Lake City and the Wasatch Front, Utah's largest metropolitan area, reducing the flow at the mouth to 378,000 acre feet (466,000,000 m³). However, in late spring and early summer of wet years the Duchesne River can become a large torrent carrying many thousands of cubic feet of water per second.
The Lake Fork of the Duchesne River is impounded by the Moon Lake Dam, built in 1938 by the Bureau of Reclamation. Starvation Dam and Soldier Creek Dam, also built by the Bureau of Reclamation, are located on the Strawberry River, the longest tributary of the Duchesne River.
Duchesne River