Yellowstone River River Levels

Last Updated: January 22, 2026

The Yellowstone River is a major tributary of the Missouri River, spanning 692 miles from its source in Wyoming to its mouth in North Dakota.



15-Day Weather Outlook


Summary

Total streamflow across the Yellowstone River was last observed at 2,631 cfs, and is expected to yield approximately 5,219 acre-ft of water today; about 51% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 5,177 cfs, with recent peaks last observed on 2011-05-25 when daily discharge volume was observed at 448,060 cfs.

Maximum discharge along the river is currently at the Yellowstone River Near Sidney Mt reporting a streamflow rate of 6,130 cfs. However, the streamgauge with the highest stage along the river is the Yellowstone River At Glendive Mt with a gauge stage of 46.83 ft. This river is monitored from 9 different streamgauging stations along the Yellowstone River, the highest being situated at an altitude of 7,731 ft, the Yellowstone River At Yellowstone Lk Outlet Ynp.

River Details

Last Updated 2026-01-22
Discharge Volume 5,219 ACRE-FT
Streamflow 2,631.0 cfs
-2681.0 cfs (-50.47%)
Percent of Normal 50.82%
Maximum 448,060.0 cfs
2011-05-25
Seasonal Avg 5,177 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Yellowstone River At Yellowstone Lk Outlet Ynp
USGS 06186500
458 cfs 2.46 ft -0.87
Yellowstone River Near Altonah
USGS 09292500
54 cfs 0.84 ft -4.75
Yellowstone River At Corwin Springs Mt
USGS 06191500
813 cfs 0.88 ft -4.35
Yellowstone River Near Livingston Mt
USGS 06192500
1360 cfs 0.12 ft -2.86
Yellowstone River At Billings Mt
USGS 06214500
2600 cfs 2.45 ft -0.76
Yellowstone River At Forsyth Mt
USGS 06295000
4770 cfs 1.94 ft -0.83
Yellowstone River At Miles City Mt
USGS 06309000
5210 cfs 3.32 ft -13.02
Yellowstone River At Glendive Mt
USGS 06327500
6000 cfs 46.83 ft -1.96
Yellowstone River Near Sidney Mt
USGS 06329500
6130 cfs 5.09 ft -8.51
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Yellowstone River is a tributary of the Missouri River, approximately 692 miles (1,114 km) long, in the western United States. Considered the principal tributary of the upper Missouri, the river and its tributaries drain a wide area stretching from the Rocky Mountains in the vicinity of Yellowstone National Park across the mountains and high plains of southern Montana and northern Wyoming.