Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Dearborn River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Dearborn River, the highest being situated at an altitude of ft, the .

The Dearborn River is a tributary of the Missouri River in Montana, USA. It spans a length of 70 miles and has a drainage area of 1,100 square miles. The river flows through the Lewis and Clark National Forest and has a rich history dating back to the Lewis and Clark Expedition. The river is also well-known for its recreational activities such as fishing, camping, and kayaking. The Holter Dam and the Hauser Dam are two major hydroelectric facilities on the Missouri River that have a direct impact on the Dearborn River. These dams regulate the flow of water and provide hydroelectric power to the surrounding areas. The river is also used for agricultural purposes such as irrigation, which supports the production of a variety of crops, including hay, grain, and vegetables.