SNAKE RIVER

RIVER LEVELS
April 28, 2025


Total streamflow across the Snake River was last observed at 210,942 cfs, and is expected to yield approximately 418,397 acre-ft of water today; about 69% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 303,704 cfs, with recent peaks last observed on 2011-05-27 when daily discharge volume was observed at 763,301 cfs.

Maximum discharge along the river is currently at the Snake River Near Anatone reporting a streamflow rate of 45,800 cfs. However, the streamgauge with the highest stage along the river is the Snake River At Hells Canyon Dam Id-Or State Line with a gauge stage of 68.09 ft. This river is monitored from 27 different streamgauging stations along the Snake River, the highest being situated at an altitude of 9,326 ft, the Snake River Near Montezuma.

Last Updated 2025-04-28
Discharge Volume 418,397 ACRE-FT
Streamflow 210,941.5 cfs
+10872.7 cfs (+5.43%)
Percent of Normal 69.46%
Maximum 763,301.0 cfs
2011-05-27
Seasonal Avg 303,704 cfs
       
River Streamflow Levels
Streamgauge Streamflow Gauge Stage 24hr Change (%) % Normal Minimum (cfs) Maximum (cfs) Air Temp Elevation
Snake River Near Montezuma
USGS 09047500
54 cfs 1.48 ft 5.31
Snake River Ab Jackson Lake At Flagg Ranch Wy
USGS 13010065
1070 cfs 3.77 ft 0
Snake River Nr Moran Wy
USGS 13011000
301 cfs 2.54 ft -1.31
Snake River At Moose
USGS 13013650
1440 cfs 9.29 ft 15.2
Snake River Bl Flat Creek Nr Jackson Wy
USGS 13018750
2310 cfs 1.95 ft 10.53
Snake River Ab Reservoir Nr Alpine Wy
USGS 13022500
3840 cfs 4.2 ft 5.79
Snake River Nr Irwin Id
USGS 13032500
9070 cfs 7.92 ft -0.44
Snake River Nr Heise Id
USGS 13037500
9570 cfs 4.99 ft 0.63
Snake River At Lorenzo Id
USGS 13038500
5050 cfs 6.3 ft 1.41
Snake River Nr Menan Id
USGS 13057000
7810 cfs 4.68 ft 4.69
Snake River Ab Eagle Rock Nr Idaho Falls Id
USGS 13057155
7310 cfs 8.03 ft 3.84
Snake River Nr Shelley Id
USGS 13060000
6700 cfs 7.1 ft 3.4
Snake River At Blackfoot Id
USGS 13062500
4180 cfs 5.64 ft 0
Snake River Nr Blackfoot Id
USGS 13069500
4060 cfs 4.02 ft 1.75
Snake River At Neeley Id
USGS 13077000
7850 cfs 5.48 ft -1.13
Snake R Nr Minidoka Id (At Howells Ferry)
USGS 13081500
6420 cfs 6.38 ft 0.47
Snake River Gaging Station At Milner Id
USGS 13087995
0 cfs 0.94 ft None
Snake River Nr Twin Falls Id
USGS 13090500
418 cfs 1.66 ft 1.21
Snake River Nr Buhl Id
USGS 13094000
1660 cfs 1.08 ft 3.11
Snake River At King Hill Id
USGS 13154500
6750 cfs 5.97 ft 3.37
Snake River Nr Murphy Id
USGS 13172500
6150 cfs 24.86 ft 10.61
Snake River At Nyssa Or
USGS 13213100
8210 cfs 5.37 ft -4.87
Snake River At Weiser Id
USGS 13269000
18500 cfs 4.98 ft 5.11
Snake River At Hells Canyon Dam Id-Or State Line
USGS 13290450
19200 cfs 68.09 ft 15.85
Snake River Near Pine City
USGS 05338500
719 cfs 3.77 ft -4.13
Snake River Bl Mcduff Rapids At China Gardens
USGS 13317660
45700 cfs 12.35 ft 8.81
Snake River Near Anatone
USGS 13334300
45800 cfs 8.88 ft 10.36
Seasonal Discharge Comparison
Maximum Streamflow Discharge

Weather Forecast

Streamflow Elevation Profile

The Snake River is a major river of the greater Pacific Northwest region in the United States. At 1,078 miles (1,735 km) long, it is the largest tributary of the Columbia River, in turn the largest North American river that empties into the Pacific Ocean. The Snake River rises in western Wyoming, then flows through the Snake River Plain of southern Idaho, the rugged Hells Canyon on the Oregon–Idaho border and the rolling Palouse Hills of Washington, emptying into the Columbia River at the Tri-Cities, Washington.
The Snake River drainage basin encompasses parts of six U.S. states and is known for its varied geologic history. The Snake River Plain was created by a volcanic hotspot which now lies underneath the Snake River headwaters in Yellowstone National Park. Gigantic glacial-retreat flooding episodes that occurred during the previous Ice Age carved out canyons, cliffs and waterfalls along the middle and lower Snake River. Two of these catastrophic flooding events, the Missoula Floods and Bonneville Flood, significantly affected the river and its surroundings.
Prehistoric Native Americans lived along the Snake starting more than 11,000 years ago. Salmon from the Pacific Ocean spawned by the millions in the river, and were a vital resource for people living on the Snake downstream of Shoshone Falls. By the time Lewis and Clark explored the area, the Nez Perce and Shoshone were the dominant Native American groups in the region. Later explorers and fur trappers further changed and used the resources of the Snake River basin. At one point, sign language used by the Shoshones representing weaving baskets was misinterpreted to represent a snake, giving the Snake River its name.By the middle 19th century, the Oregon Trail had become well established, bringing numerous settlers to the Snake River region. Steamboats and railroads moved agricultural products and minerals along the river throughout the 19th and early 20th centuries. Starting in the 1890s, fifteen major dams have been built on the Snake River to generate hydroelectricity, enhance navigation, and provide irrigation water. However, these dams blocked salmon migration above Hells Canyon and have led to water quality and environmental issues in certain parts of the river. The removal of several dams on the lower Snake River has been proposed, in order to restore some of the river's once-tremendous salmon runs.