MUSSELSHELL RIVER

River Levels Streamflow Hydrology
November 21, 2024

TOTAL DISCHARGE (CFS)

SUMMARY

Last Updated 2024-11-20
Discharge Volume 180 ACRE-FT
Streamflow 90.6 cfs
-65.0 cfs (-41.77%)
Percent of Normal 25.14%
Maximum 51,070.0 cfs
2011-06-10
Seasonal Avg 360 cfs

Total streamflow across the Musselshell River was last observed at 91 cfs, and is expected to yield approximately 180 acre-ft of water today; about 25% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 360 cfs, with recent peaks last observed on 2011-06-10 when daily discharge volume was observed at 51,070 cfs.

Maximum discharge along the river is currently at the Musselshell River At Musselshell Mt reporting a streamflow rate of 105 cfs. However, the streamgauge with the highest stage along the river is the Musselshell River At Harlowton Mt with a gauge stage of 3.15 ft. This river is monitored from 6 different streamgauging stations along the Musselshell River, the highest being situated at an altitude of 4,668 ft, the Musselshell River Nr Martinsdale.

The Musselshell River is a tributary of the Missouri River that runs through Montana. It has a length of approximately 360 miles, originating in the Crazy Mountains and flowing eastward until it reaches the Missouri River. The river has a rich history, with evidence of Native American settlements dating back thousands of years. Today, the Musselshell River is an important source of irrigation for agricultural purposes, and several reservoirs and dams have been constructed along its course, including the Yellowtail Dam and the Fort Peck Dam. These dams provide hydroelectric power and control flooding along the river. Recreational activities, such as fishing, hunting, and camping, are popular along the Musselshell River, making it an important part of Montana's outdoor recreation economy.

YEAR OVER YEAR DISCHARGE (CFS)

Streamflow Conditions
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Musselshell River Nr Martinsdale
USGS 06119600
32 cfs 1.48 ft -2.45
Musselshell River At Harlowton Mt
USGS 06120500
91 cfs 3.15 ft 114.18
Musselshell River Ab Mud Cr Nr Shawmut Mt
USGS 06123030
53 cfs 3.01 ft -18.59
Musselshell River Near Roundup Mt
USGS 06126500
38 cfs 1.4 ft -17.28
Musselshell River At Musselshell Mt
USGS 06127500
105 cfs 2.3 ft 1.94
Musselshell River At Mosby Mt
USGS 06130500
102 cfs 2.8 ft -3.58
History of the River

The Musselshell River is a tributary of the Missouri River, 341.9 miles (550.2 km) long from its origins at the confluence of its North and South Forks near Martinsdale, Montana to its mouth on the Missouri River. It is located east of the Continental divide entirely within Montana in the United States. Counting its pre-confluence tributaries, it measures 425–500 miles (684–805 km) in length.It rises in several forks in the Crazy, Little Belt, and Castle mountains in central Montana. The main branch is formed by the confluence of the North Fork and South Fork in Meagher County, about 25 miles (40 km) east of White Sulphur Springs, Montana, just east of Martinsdale, north of Martinsdale Reservoir, and just west of Meagher County's border with Wheatland County. The North Fork flows south from the Little Belt Mountains through Bair Reservoir, then southeast. The South Fork flows northeast from the Crazy Mountains. From the confluence of these two waterways, the main branch flows roughly due east past Two Dot, Harlowton, and Roundup, then turns north just past Melstone, and continues to the UL Bend on the Missouri River at the beginning of Fort Peck Reservoir.The Musselshell River has also been known as: Cockkleshell River, Mahtush-ahzhah, Muscleshell River, Mustleshell River, Shell River. The Musselshell was entered by the Lewis and Clark Expedition on May 20, 1805 and named by them for the freshwater mussels lining the bank, noting in their journals that the Minnetare people had given the waterway a similar name. The Blackfeet, who hunted buffalo and prepared the meat for winter in the Musselshell area, called it the Dried Meat River.

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Watershed River Levels

38

Cubic Feet Per Second

7

Cubic Feet Per Second

168

Cubic Feet Per Second

120

Cubic Feet Per Second