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Poplar River at international boundary water level

River gauge, Poplar River, Montana, United States

Directions

Right now

Below flood stage

Water level

2.46ft Steady over the last 24 hours

Flow
4.8 cfs
3 5 8 10 Highest onrecord 10.45 ft Minor floodstage 6.00 ft

History

History
2.462.472.482.49ftOct 16Oct 17Oct 18Oct 19Oct 192.462.472.482.49ftOct 16Oct 18Oct 19
Water level Minor flood stage

What this means

Water levels are unremarkable at Poplar River at international boundary, where the gauge shows 2.46 ft.

It is 3.54 ft below the flood stage of 6.00 ft.

It has barely moved over the past 24 hours. The 30-day range is 2.46 ft – 2.49 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
10.45 ftApril 6, 1954

Paddling and fishing conditions

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

For reference, flood stage is 6.00 ft.

Highest crests on record

RankLevelDate
110.45 ftApril 6, 1954
29.38 ftApril 23, 1975
39.17 ftJune 21, 1963
48.96 ftMarch 17, 2017
58.78 ftMarch 21, 1939
68.58 ftJuly 22, 1993
78.43 ftApril 3, 1969
88.28 ftMarch 18, 1976
98.25 ftApril 13, 1982
108.16 ftApril 7, 1952

Weather at the gauge

The forecast is not available right now.

Sunrise 07:32 AM Sunset 06:05 PM Daylight 10 hr, 33 min First quarter 63%

Map

Other gauges on the Poplar River

Gauge Level Compared with normal 24 hours Distance
Poplar River near Poplar MTRiver gauge, Poplar River 7.22 ft Below flood stage +0.03 ft 65 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
East Poplar River at international boundaryRiver gauge, East Poplar River 1.58 m Below flood stage −0.03 m 21 km
Poplar R above W Fk Poplar R, near BredetteRiver gauge, Poplar R 26.95 ft No reference yet −0.01 ft 32 mi

Questions and answers

What is flood stage for the Poplar River at international boundary?

The official flood stage is 6.00 ft. The level is currently 3.54 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 Poplar River at international boundary today?

On Oct 19, 2026, 05:15 PM MDT, the water level was 2.46 ft. Steady over the last 24 hours.

Is Poplar River at international boundary rising or falling?

Steady over the last 24 hours.

Is the level of Poplar River at international boundary normal?

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

What is the highest water level ever recorded at Poplar River at international boundary?

The highest level on record is 10.45 ft on April 6, 1954.

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:06178000 (Agency page)
Coordinates
48.99029, -105.69691 (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 2.46 ft 2026-10-19 23:15 Provisional
Flow 4.8 cfs 2026-10-19 23:15 Provisional

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Embed this gauge

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How to cite

U.S. Geological Survey: Poplar River at international boundary (usgs:06178000). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/montana/poplar-river-at-international-boundary

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.