Yellowstone River River Levels

Last Updated: December 26, 2025

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 7,037 cfs, and is expected to yield approximately 13,958 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 13,748 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 Miles City Mt reporting a streamflow rate of 8,100 cfs. However, the streamgauge with the highest stage along the river is the Yellowstone River At Glendive Mt with a gauge stage of 49.63 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 2025-12-26
Discharge Volume 13,958 ACRE-FT
Streamflow 7,037.0 cfs
+312.0 cfs (+4.64%)
Percent of Normal 51.19%
Maximum 448,060.0 cfs
2011-05-25
Seasonal Avg 13,748 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
507 cfs 2.57 ft 6.74
Yellowstone River Near Altonah
USGS 09292500
64 cfs 0.98 ft 12.13
Yellowstone River At Corwin Springs Mt
USGS 06191500
1350 cfs 1.5 ft 22.73
Yellowstone River Near Livingston Mt
USGS 06192500
1630 cfs 0.12 ft 4.49
Yellowstone River At Billings Mt
USGS 06214500
3550 cfs 3.01 ft -1.11
Yellowstone River At Forsyth Mt
USGS 06295000
5430 cfs 2.06 ft 0.56
Yellowstone River At Miles City Mt
USGS 06309000
8100 cfs 3.36 ft -21.36
Yellowstone River At Glendive Mt
USGS 06327500
6000 cfs 49.63 ft -1.96
Yellowstone River Near Sidney Mt
USGS 06329500
6130 cfs 7.05 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.