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Poplar River near Intl Boundary

Highest listed crest 10.45 ftFlood stage 6.0 ft56 crests since 1933

The Poplar River near Intl Boundary crested above flood stage 31 times among the 56 crests the National Weather Service lists from 1933 to 2023. The highest, 10.45 ft on April 6, 1954, was minor flooding, 4.45 feet above flood stage.

The gauge

Highest listed crest
10.45 ft
April 6, 1954; 12,700 cubic feet per second
Flood stage
6.0 ft
No major stage set
Crests at major
0
31 above flood stage
Most recent flood crest
April 11, 2023
7.30 ft, minor flooding
Location
Daniels County
Montana

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Poplar River near Intl Boundary
Action stage5.015May 24, 2006The level at which the NWS or its partners begin to take action
Flood stage (minor)6.031Apr 11, 2023Minimal or no property damage, but possibly some public threat

Every listed crest

56 crests from 1933 to 2023. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Poplar River near Intl Boundary, 1933 to 2023 4681012ft Flood stage 6.0 ft Mar 19, 1933: 5.48 ft, action stage; 365 cubic feet per secondJun 15, 1935: 6.32 ft, minor flooding; 1,650 cubic feet per secondMar 21, 1939: 8.78 ft, minor flooding; 5,600 cubic feet per secondApr 14, 1940: 6.47 ft, minor floodingMar 8, 1941: 6.14 ft, minor floodingMar 28, 1943: 7.59 ft, minor floodingApr 1, 1944: 5.47 ft, action stageMar 24, 1947: 5.33 ft, action stageApr 18, 1950: 6.38 ft, minor flooding; 1,710 cubic feet per secondApr 7, 1951: 6.45 ft, minor floodingApr 7, 1952: 8.16 ft, minor flooding; 3,500 cubic feet per secondMar 28, 1953: 5.48 ft, action stageApr 6, 1954: 10.45 ft, minor flooding; 12,700 cubic feet per secondMar 30, 1958: 6.02 ft, minor flooding; 1,590 cubic feet per secondMar 12, 1959: 4.47 ft, below flood stageMar 21, 1960: 7.57 ft, minor flooding; 2,200 cubic feet per secondMar 14, 1961: 5.35 ft, action stage; 188 cubic feet per secondMar 29, 1962: 5.59 ft, action stage; 755 cubic feet per secondJun 21, 1963: 9.17 ft, minor flooding; 7,410 cubic feet per secondMar 31, 1964: 5.03 ft, action stageMar 16, 1965: 5.11 ft, action stage; 500 cubic feet per secondApr 16, 1965: 4.12 ft, below flood stage; 278 cubic feet per secondApr 8, 1967: 7.44 ft, minor flooding; 1,800 cubic feet per secondMar 1, 1968: 5.86 ft, action stageApr 3, 1969: 8.43 ft, minor floodingApr 5, 1970: 5.62 ft, action stageMar 30, 1971: 4.34 ft, below flood stage; 250 cubic feet per secondJun 8, 1972: 5.36 ft, action stage; 3,590 cubic feet per secondApr 23, 1975: 9.38 ft, minor flooding; 8,520 cubic feet per secondMar 18, 1976: 8.28 ft, minor flooding; 3,350 cubic feet per secondMay 27, 1977: 4.95 ft, below flood stage; 615 cubic feet per secondMar 22, 1978: 6.46 ft, minor floodingApr 19, 1979: 6.80 ft, minor flooding; 1,880 cubic feet per secondApr 1, 1980: 4.37 ft, below flood stage; 315 cubic feet per secondApr 13, 1982: 8.25 ft, minor flooding; 4,000 cubic feet per secondJun 21, 1984: 6.43 ft, minor flooding; 1,510 cubic feet per secondMar 14, 1985: 4.69 ft, below flood stageFeb 26, 1986: 7.18 ft, minor flooding; 2,500 cubic feet per secondApr 2, 1987: 4.18 ft, below flood stage; 260 cubic feet per secondMar 11, 1989: 6.20 ft, minor floodingJul 26, 1990: 6.77 ft, minor flooding; 1,840 cubic feet per secondJul 22, 1993: 8.58 ft, minor flooding; 5,550 cubic feet per secondMar 14, 1994: 6.16 ft, minor flooding; 800 cubic feet per secondApr 7, 1996: 6.49 ft, minor floodingMar 29, 1997: 5.76 ft, action stage; 885 cubic feet per secondMar 25, 1998: 6.14 ft, minor floodingMar 23, 1999: 7.39 ft, minor floodingMar 9, 2001: 5.24 ft, action stageJul 11, 2001: 4.26 ft, below flood stage; 242 cubic feet per secondApr 12, 2002: 4.10 ft, below flood stage; 150 cubic feet per secondMar 16, 2003: 6.90 ft, minor floodingMay 26, 2004: 5.32 ft, action stage; 413 cubic feet per secondMay 24, 2006: 5.84 ft, action stage; 701 cubic feet per secondMar 15, 2007: 4.91 ft, below flood stage; 519 cubic feet per secondMar 17, 2017: 8.96 ft, minor floodingApr 11, 2023: 7.30 ft, minor flooding Highest, 10.45 ft, Apr 6, 1954 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Poplar River near Intl Boundary 1930s: 2 1940s: 3 1950s: 5 1960s: 4 1970s: 4 1980s: 4 1990s: 6 6 2000s: 1 2010s: 1 2020s: 1 1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

The 50 highest of 56 listed crests.

Highest listed crests, Poplar River near Intl Boundary
1Apr 6, 195410.45+4.45Minor12,700
2Apr 23, 19759.38+3.38Minor8,520
3Jun 21, 19639.17+3.17Minor7,410
4Mar 17, 20178.96+2.96Minor—
5Mar 21, 19398.78+2.78Minor5,600
6Jul 22, 19938.58+2.58Minor5,550
7Apr 3, 19698.43+2.43Minor—
8Mar 18, 19768.28+2.28Minor3,350
9Apr 13, 19828.25+2.25Minor4,000
10Apr 7, 19528.16+2.16Minor3,500
11Mar 28, 19437.59+1.59Minor—
12Mar 21, 19607.57+1.57Minor2,200
13Apr 8, 19677.44+1.44Minor1,800
14Mar 23, 19997.39+1.39Minor—
15Apr 11, 20237.30+1.30Minor—
16Feb 26, 19867.18+1.18Minor2,500
17Mar 16, 20036.90+0.90Minor—
18Apr 19, 19796.80+0.80Minor1,880
19Jul 26, 19906.77+0.77Minor1,840
20Apr 7, 19966.49+0.49Minor—
21Apr 14, 19406.47+0.47Minor—
22Mar 22, 19786.46+0.46Minor—
23Apr 7, 19516.45+0.45Minor—
24Jun 21, 19846.43+0.43Minor1,510
25Apr 18, 19506.38+0.38Minor1,710
26Jun 15, 19356.32+0.32Minor1,650
27Mar 11, 19896.20+0.20Minor—
28Mar 14, 19946.16+0.16Minor800
29Mar 8, 19416.14+0.14Minor—
30Mar 25, 19986.14+0.14Minor—
31Mar 30, 19586.02+0.02Minor1,590
32Mar 1, 19685.86−0.14Action—
33May 24, 20065.84−0.16Action701
34Mar 29, 19975.76−0.24Action885
35Apr 5, 19705.62−0.38Action—
36Mar 29, 19625.59−0.41Action755
37Mar 19, 19335.48−0.52Action365
38Mar 28, 19535.48−0.52Action—
39Apr 1, 19445.47−0.53Action—
40Jun 8, 19725.36−0.64Action3,590
41Mar 14, 19615.35−0.65Action188
42Mar 24, 19475.33−0.67Action—
43May 26, 20045.32−0.68Action413
44Mar 9, 20015.24−0.76Action—
45Mar 16, 19655.11−0.89Action500
46Mar 31, 19645.03−0.97Action—
47May 27, 19774.95−1.05Below flood stage615
48Mar 15, 20074.91−1.09Below flood stage519
49Mar 14, 19854.69−1.31Below flood stage—
50Mar 12, 19594.47−1.53Below flood stage—

The worst floods along the Poplar River

For this gauge's highest crests, the other gauges on the Poplar River that crested above flood stage within a week.

March 17, 2017: 8.96 ft here, minor flooding

  • PoplarMT · Mar 18, 2017 · 22.60 ft · Major · its highest

Gauges on the Poplar River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Poplar River
Intl Boundary this gaugeMT6.010.45 ft, Apr 6, 19540
PoplarMT16.022.60 ft, Mar 18, 20171

Other gauges in Daniels County

Flood gauges in Daniels County
Intl Boundary10.012.80 ft, Mar 25, 19430

Daniels County: every hazard · River floods across the country · Montana

NOAA National Water Prediction Service, gauge PPRM8, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.