Osage River River Levels

Last Updated: December 4, 2025

The Osage River is a significant waterway that flows through Missouri and Kansas, stretching over 500 miles.


Summary

Total streamflow across the Osage River was last observed at 2,360 cfs, and is expected to yield approximately 4,681 acre-ft of water today; about 27% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 8,658 cfs, with recent peaks last observed on 2015-12-30 when daily discharge volume was observed at 196,100 cfs.

Maximum discharge along the river is currently at the Osage River Below St. Thomas reporting a streamflow rate of 1,260 cfs. This is also the highest stage along the Osage River, with a gauge stage of 2.51 ft at this location. This river is monitored from 2 different streamgauging stations along the Osage River, the highest being situated at an altitude of 558 ft, the Osage River Near Bagnell.

River Details

Last Updated 2025-12-04
Discharge Volume 4,681 ACRE-FT
Streamflow 2,360.0 cfs
+100.0 cfs (+4.42%)
Percent of Normal 27.26%
Maximum 196,100.0 cfs
2015-12-30
Seasonal Avg 8,658 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Osage River Near Bagnell
USGS 06926000
1100 cfs 1.57 ft 7.84
Osage River Below St. Thomas
USGS 06926510
1260 cfs 2.51 ft 1.61
Seasonal Discharge Comparison
Maximum Streamflow Discharge
Streamflow Elevation Profile

The Osage River is a 276-mile-long (444 km) tributary of the Missouri River in central Missouri in the United States. The Osage River is the 8th-largest river in Missouri. The river drains a mostly rural area of 15,300 square miles (40,000 km2). The watershed includes an area of east-central Kansas and a large portion of west-central and central Missouri, where it drains northwest areas of the Ozark Plateau.
The river flows generally easterly, then northeasterly for the final 80 miles (130 km) where it joins the Missouri River. It is impounded in two major locations. Most of the river has been converted into a chain of two reservoirs, the Harry S. Truman Reservoir and the Lake of the Ozarks.