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Little Missouri River at Marmarth water level

River gauge, Little Missouri River, North Dakota, United States

Directions

Right now

Very low for mid-October

Water level

0.79ft Steady over the last 24 hours

Flow
10.3 cfs
0 10 20 Highest onrecord 21.70 ft Minor floodstage 18.00 ft

History

History
12ftOct 16Oct 17Oct 18Oct 19Oct 2012ftOct 16Oct 18Oct 20
12ftSep 21Sep 28Oct 5Oct 13Oct 2012ftSep 21Oct 5Oct 20
-010ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage-010ftOct 2025Apr 2026Oct 2026Minor flood stage
-0510ftJanMarMayJulSepNov2026-0510ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %) Minor flood stage

What this means

Low water at Little Missouri River at Marmarth: the gauge reads 0.79 ft, far below normal for mid-October.

That puts it 0.58 ft below the median of 1.37 ft for mid-October, based on 25 years of readings. It is 17.21 ft below the flood stage of 18.00 ft. A year ago it stood at 1.73 ft (−0.94 ft).

The level has held steady over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. The 30-day range is 0.67 ft – 0.99 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 25 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
1.37 ft0.58 ft below the median for this date
Normal for this date
1.08 ft – 2.04 ft8 years in 10 fall in this range (25 years of records)
Same day last year
1.73 ft−0.94 ft
Lowest and highest in 30 days
0.67 ft – 0.99 ft
Lowest and highest in 12 months
0.24 ft – 3.14 ft
Highest on record
21.70 ftMarch 23, 1947

Paddling and fishing conditions

At low levels, plan for shorter paddling trips and expect to walk your boat through a few shoals.

For reference, flood stage is 18.00 ft.

What happens at each level

30.00 ft
City of Marmarth will flood due to dike being overtopped at this height.
18.00 ft
Flooding confined to grasslands used by ranchers in the area.
0.79 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 %.

RankLevelDate
121.70 ftMarch 23, 1947
221.50 ftMarch 1, 1913
321.11 ftMay 23, 2011
420.20 ftMay 1, 1929
519.70 ftMarch 1, 1920
619.50 ftFebruary 20, 1943
718.30 ftMarch 12, 1972
817.80 ftApril 5, 1944
917.33 ftMarch 27, 1978
1016.85 ftApril 17, 2009

Weather at the gauge

No rain in the last 3 days.

19 Mon 67° 32° – Wind 22 mph
20 Tue 73° 38° – Wind 12 mph
21 Wed 65° 38° – Wind 14 mph
22 Thu 78° 53° – Wind 10 mph
23 Fri 81° 49° – Wind 26 mph
24 Sat 51° 40° – Wind 31 mph
25 Sun 46° 35° – Wind 18 mph

Forecast: Open-Meteo

Sunrise 07:20 AM Sunset 06:02 PM Daylight 10 hr, 42 min Waxing gibbous 72%

Map

Other gauges on the Little Missouri River

Gauge Level Compared with normal 24 hours Distance
Little Missouri River at Camp CrookRiver gauge, Little Missouri River 1.72 ft Below flood stage ±0 52 mi
Little Missouri River at MedoraRiver gauge, Little Missouri River 1.30 ft Very low +0.01 ft 47 mi
Little Missouri River near Watford CityRiver gauge, Little Missouri River 7.04 ft High −0.04 ft 95 mi
Little Missouri River above Mouth near OakdaleRiver gauge, Little Missouri River 5.85 ft No reference yet −0.03 ft 105 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Deep Creek near AmidonRiver gauge, Deep Creek 11.48 ft Normal +0.05 ft 26 mi

Questions and answers

How does the Little Missouri River at Marmarth compare with last year?

It is 0.94 ft lower than on the same day last year, when the reading was 1.73 ft.

What is flood stage for the Little Missouri River at Marmarth?

The official flood stage is 18.00 ft. The level is currently 17.21 ft below it.

What is a normal level for the Little Missouri River at Marmarth in mid-October?

The median for mid-October is 1.37 ft. In 8 years out of 10 the reading falls between 1.08 ft and 2.04 ft, based on 25 years of records.

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 Little Missouri River at Marmarth today?

On Oct 20, 2026, 06:00 AM MDT, the water level was 0.79 ft. Steady over the last 24 hours.

Is Little Missouri River at Marmarth rising or falling?

Steady over the last 24 hours. Down 0.05 ft over the last 7 days.

Is the level of Little Missouri River at Marmarth normal?

Very low for mid-October. Compared with 25 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:06335500 (Agency page)
Coordinates
46.29778, -103.91750 (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

ParameterLast valueTime (UTC)Quality
Water level 0.79 ft 2026-10-20 12:00 Provisional
Flow 10.3 cfs 2026-10-20 12:00 Provisional

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How to cite

U.S. Geological Survey: Little Missouri River at Marmarth (usgs:06335500). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/north-dakota/little-missouri-river-at-marmarth

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.