Yellowstone River River Levels

Last Updated: March 24, 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.


Summary

Total streamflow across the Yellowstone River was last observed at 29,701 cfs, and is expected to yield approximately 58,911 acre-ft of water today; about 98% of normal. Average streamflow for this time of year is 30,160 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 At Glendive Mt reporting a streamflow rate of 5,850 cfs. This is also the highest stage along the Yellowstone River, with a gauge stage of 43.03 ft at this location. 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.




15-Day Weather Outlook


River Details

Last Updated 2026-03-23
Discharge Volume 58,911 ACRE-FT
Streamflow 29,701.0 cfs
+924.0 cfs (+3.21%)
Percent of Normal 98.48%
Maximum 448,060.0 cfs
2011-05-25
Seasonal Avg 30,160 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
411 cfs 2.35 ft 0.98
Yellowstone River Near Altonah
USGS 09292500
82 cfs 1.04 ft 6.96
Yellowstone River At Corwin Springs Mt
USGS 06191500
1690 cfs 1.82 ft 8.33
Yellowstone River Near Livingston Mt
USGS 06192500
2180 cfs 0.92 ft 6.86
Yellowstone River At Billings Mt
USGS 06214500
3480 cfs 2.98 ft 19.18
Yellowstone River At Forsyth Mt
USGS 06295000
5290 cfs 1.84 ft 5.59
Yellowstone River At Miles City Mt
USGS 06309000
5050 cfs 3.05 ft -0.59
Yellowstone River At Glendive Mt
USGS 06327500
5850 cfs 43.03 ft -1.52
Yellowstone River Near Sidney Mt
USGS 06329500
5750 cfs 2.87 ft -1.2
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.