Total streamflow across the Cheyenne River was last observed at 356 cfs, and is expected to yield approximately 706 acre-ft of water today; about 60% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 591 cfs, with recent peaks last observed on 2019-05-23 when daily discharge volume was observed at 89,511 cfs.

Maximum discharge along the river is currently at the Cheyenne River Near Wasta reporting a streamflow rate of 123 cfs. However, the streamgauge with the highest stage along the river is the Cheyenne River At Redshirt with a gauge stage of 9.77 ft. This river is monitored from 7 different streamgauging stations along the Cheyenne River, the highest being situated at an altitude of 3,582 ft, the Cheyenne River Near Spencer.

The Cheyenne River is a tributary of the Missouri River, with a length of 295 miles. It has played an important role in the history of the Cheyenne people, who used it for transportation and hunting. The river originates in the Black Hills of South Dakota and flows through the Cheyenne River Indian Reservation before joining the Missouri River. There are several dams and reservoirs along the river, including the Angostura Dam and Reservoir, which is used for irrigation and recreation, and the Belle Fourche Dam, which provides flood control and hydroelectric power. The river is also used for agriculture, particularly for grazing livestock. The Cheyenne River is an important source of water for the surrounding communities and plays a significant role in the ecological and economic well-being of the region.