Grand River at Little Eagle water level

Name: Grand River at Little Eagle water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Grand River, South Dakota, United States

Directions

Below flood stage

Water level

2.61ft Steady over the last 24 hours

Measured Oct 20, 2026, 01:15 AM CDT (43 min ago)

Flow: 48.7 cfs

History

7 days 30 days 1 year Years compared

20252026

Water level Minor flood stage

What this means

Water levels are unremarkable at Grand River at Little Eagle, where the gauge shows 2.61 ft.

It is 12.39 ft below the flood stage of 15.00 ft. On the same day last year the reading was 3.31 ft, a difference of −0.70 ft.

It has barely moved over the past 24 hours. The 30-day range is 2.58 ft – 3.67 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Same day last year: 3.31 ft−0.70 ft
Lowest and highest in 30 days: 2.58 ft – 3.67 ft
Lowest and highest in 12 months: 2.41 ft – 9.77 ft
Highest on record: 21.27 ftMarch 17, 2011

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

For reference, flood stage is 15.00 ft.

What happens at each level

22.00 ft: Water levels will reach the low steel of the bridge on Highway 63
21.00 ft: The community of Little Eagle begins to experience some flooding
17.00 ft: Extensive flooding of pasture land begins as both banks of the river are overtopped
15.00 ft: Low-lying pasture and hay land along the river begins to flood
2.61 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: < 5 %.

Rank	Level	Date
1	21.27 ft	March 17, 2011
2	21.01 ft	March 12, 1972
3	20.76 ft	August 25, 2014
4	19.16 ft	March 23, 1987
5	18.41 ft	March 23, 1978
6	17.94 ft	June 10, 2021
7	17.25 ft	March 12, 1996
8	16.96 ft	March 27, 1997
9	15.83 ft	May 31, 2013
10	15.76 ft	March 24, 2010

Weather at the gauge

No rain in the last 3 days.

18 Sun 66° 41° – Wind 14 mph

19 Mon 64° 35° – Wind 13 mph

20 Tue 73° 46° – Wind 15 mph

21 Wed 70° 50° – Wind 10 mph

22 Thu 77° 50° 0.01 in Wind 17 mph

23 Fri 74° 59° 0.17 in, 37% Wind 21 mph

24 Sat 56° 40° 0.42 in, 44% Wind 27 mph

Forecast: Open-Meteo

Sunrise 08:07 AM Sunset 06:50 PM Daylight 10 hr, 43 min First quarter 66%

Map

Other gauges on the Grand River

Gauge	Level	Compared with normal	24 hours	Distance
Grand River near Thunder HawkRiver gauge, Grand River	5.06 ft	Normal	+0.01 ft	53 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Oak Creek near Rattlesnake Butte near WakpalaRiver gauge, Oak Creek	5.19 ft	Below flood stage	+0.06 ft	12 mi
Moreau River at PromiseRiver gauge, Moreau River	6.36 ft	Very low	+0.18 ft	24 mi
Moreau River near WhitehorseRiver gauge, Moreau River	1.73 ft	Below flood stage	−0.02 ft	28 mi
Porcupine Creek near Fort YatesRiver gauge, Porcupine Creek	1.73 ft	Very low	±0	37 mi
Cedar Creek near RaleighRiver gauge, Cedar Creek	−0.09 ft	Very low	+0.02 ft	39 mi
Cannonball River near RaleighRiver gauge, Cannonball River	1.77 ft	Very low	±0	41 mi

Questions and answers

Is the Grand River at Little Eagle higher than last year?

No, it is 0.70 ft lower than on the same day last year, when the reading was 3.31 ft.

What is flood stage for the Grand River at Little Eagle?

The official flood stage is 15.00 ft. The level is currently 12.39 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Grand River at Little Eagle today?

On Oct 20, 2026, 01:15 AM CDT, the water level was 2.61 ft. Steady over the last 24 hours.

Is Grand River at Little Eagle rising or falling?

Steady over the last 24 hours. Steady over the last 7 days.

Is the level of Grand River at Little Eagle normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Grand River at Little Eagle?

The highest level on record is 21.27 ft on March 17, 2011.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:06357800 (Agency page)
Coordinates: 45.65778, -100.81778 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	2.61 ft	2026-10-20 06:15	Provisional
Flow	48.7 cfs	2026-10-20 06:15	Provisional

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How to cite

U.S. Geological Survey: Grand River at Little Eagle (usgs:06357800). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/south-dakota/grand-river-at-little-eagle

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer