System Status: Please note that some river-levels data may not be available during the government shutdown.

Yellowstone River River Levels

Last Updated: November 18, 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 30,694 cfs, and is expected to yield approximately 60,881 acre-ft of water today; about 100% of normal. Average streamflow for this time of year is 30,668 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 6,440 cfs. However, the streamgauge with the highest stage along the river is the Yellowstone River At Glendive Mt with a gauge stage of 43.22 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 2025-11-17
Discharge Volume 60,881 ACRE-FT
Streamflow 30,694.0 cfs
-133.0 cfs (-0.43%)
Percent of Normal 100.09%
Maximum 448,060.0 cfs
2011-05-25
Seasonal Avg 30,668 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
494 cfs 2.54 ft -2.56
Yellowstone River Near Altonah
USGS 09292500
79 cfs 1.07 ft 18.11
Yellowstone River At Corwin Springs Mt
USGS 06191500
1050 cfs 1.23 ft -3.67
Yellowstone River Near Livingston Mt
USGS 06192500
1560 cfs 0 ft 1.3
Yellowstone River At Billings Mt
USGS 06214500
3170 cfs 3.01 ft 3.26
Yellowstone River At Forsyth Mt
USGS 06295000
5430 cfs 1.93 ft 0
Yellowstone River At Miles City Mt
USGS 06309000
6130 cfs 3.3 ft -0.65
Yellowstone River At Glendive Mt
USGS 06327500
6420 cfs 43.22 ft -2.73
Yellowstone River Near Sidney Mt
USGS 06329500
6440 cfs 3.16 ft 0.31
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.