Gallatin River at Logan MT water level

Name: Gallatin River at Logan MT 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, Gallatin River, Montana, United States

Directions

Below flood stage

Water level

4.95ft Steady over the last 24 hours

Measured Oct 18, 2026, 05:00 PM MDT (25 min ago)

Flow: 610 cfs

History

7 days

Water level Minor flood stage

What this means

The Gallatin River at Logan MT is at 4.95 ft, in the normal range.

It is 4.05 ft below the flood stage of 9.00 ft.

It has barely moved over the past 24 hours. In the last month it has stayed between 4.92 ft and 4.98 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

Highest on record: 11.88 ftFebruary 5, 1963

Floating and fishing near Gallatin River at Logan MT

Normal flows mean predictable rapids and good access at most put-ins.

Flood stage here is 9.00 ft, 4.05 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

9.90 ft: Water into USGS gage house.
8.80 ft: Water may be on small bridges and around railroad bridge footing.
8.70 ft: February 2019...Ice Jam. Water level near 8.7 feet. Water flooding farm field next to river.
8.30 ft: Minor lowland flooding near Logan.
8.10 ft: Lowland flooding occurs. Water may cross some smaller roads.
4.95 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	11.88 ft	February 5, 1963
2	11.85 ft	February 17, 1969
3	10.87 ft	February 28, 2019
4	10.63 ft	January 29, 1975
5	10.32 ft	January 1, 1980
6	10.18 ft	November 26, 1993
7	10.18 ft	February 9, 1996
8	9.90 ft	January 16, 1974
9	9.87 ft	December 27, 1996
10	9.87 ft	December 21, 1983

Weather at the gauge

The forecast is not available right now.

Sunrise 07:47 AM Sunset 06:36 PM Daylight 10 hr, 49 min First quarter 53%

Map

Other gauges on the Gallatin River

Gauge	Level	Compared with normal	24 hours	Distance
Gallatin River above Deer Creek, near Big SkyRiver gauge, Gallatin River	237 cfs	Very low	+5.0 cfs	42 mi
Gallatin River near Gallatin GatewayRiver gauge, Gallatin River	1.39 ft	Below flood stage	±0	28 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Jefferson River near Three Forks MTRiver gauge, Jefferson River	3.35 ft	Below flood stage	−0.03 ft	7 mi
Missouri River at Toston MTRiver gauge, Missouri River	4.11 ft	Below flood stage	+0.02 ft	18 mi
Willow Creek near Harrison MTRiver gauge, Willow Creek	20.8 cfs	Normal	+0.6 cfs	18 mi
E Gallatin R above Water Reclamation Fa near Bozeman MTRiver gauge, E Gallatin R	100 cfs	Very high	−1.0 cfs	21 mi
Hyalite C at Hyalite R S near Bozeman MTRiver gauge, Hyalite C	29.0 cfs	Low	+3.3 cfs	29 mi
Madison River below Ennis Lake near McAllister MTRiver gauge, Madison River	1,220 cfs	Low	−70.0 cfs	29 mi
Madison River above powerplant near McAllister MTRiver gauge, Madison River	103 cfs	Low	−4.0 cfs	29 mi
Boulder River near BoulderRiver gauge, Boulder River	34.1 cfs	Normal	+0.8 cfs	38 mi

Questions and answers

What is flood stage for the Gallatin River at Logan MT?

The official flood stage is 9.00 ft. The level is currently 4.05 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 Gallatin River at Logan MT today?

On Oct 18, 2026, 05:00 PM MDT, the water level was 4.95 ft. Steady over the last 24 hours.

Is Gallatin River at Logan MT rising or falling?

Steady over the last 24 hours.

Is the level of Gallatin River at Logan MT normal?

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

What is the highest water level ever recorded at Gallatin River at Logan MT?

The highest level on record is 11.88 ft on February 5, 1963.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:06052500 (Agency page)
Coordinates: 45.88625, -111.44201 (WGS84)
Vertical datum: NGVD29
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	4.95 ft	2026-10-18 23:00	Provisional
Flow	610 cfs	2026-10-18 23:00	Provisional

Download

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How to cite

U.S. Geological Survey: Gallatin River at Logan MT (usgs:06052500). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/montana/gallatin-river-at-logan-mt

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