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East Fork Poplar River near Intl Boundary

Highest listed crest 12.80 ftFlood stage 10.0 ft45 crests since 1932

The East Fork Poplar River near Intl Boundary crested above flood stage 25 times among the 45 crests the National Weather Service lists from 1932 to 2019. The highest, 12.80 ft on March 25, 1943, was minor flooding, 2.80 feet above flood stage.

The gauge

Highest listed crest
12.80 ft
March 25, 1943; 2,050 cubic feet per second
Flood stage
10.0 ft
No major stage set
Crests at major
0
25 above flood stage
Most recent flood crest
June 19, 2011
11.51 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, East Fork Poplar River near Intl Boundary
Action stage8.013Mar 29, 2019The level at which the NWS or its partners begin to take action
Flood stage (minor)10.025Jun 19, 2011Minimal or no property damage, but possibly some public threat

Every listed crest

45 crests from 1932 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the East Fork Poplar River near Intl Boundary, 1932 to 2019 68101214ft Flood stage 10.0 ft Aug 13, 1932: 10.70 ft, minor flooding; 2,030 cubic feet per secondMar 18, 1935: 7.90 ft, below flood stage; 350 cubic feet per secondApr 10, 1936: 9.33 ft, action stageMar 15, 1938: 11.08 ft, minor flooding; 950 cubic feet per secondMar 22, 1939: 12.40 ft, minor flooding; 2,760 cubic feet per secondApr 15, 1940: 9.60 ft, action stage; 953 cubic feet per secondMar 27, 1941: 8.87 ft, action stage; 752 cubic feet per secondMar 13, 1943: 7.91 ft, below flood stageMar 25, 1943: 12.80 ft, minor flooding; 2,050 cubic feet per secondMar 13, 1945: 7.20 ft, below flood stage; 180 cubic feet per secondMar 14, 1946: 10.21 ft, minor flooding; 522 cubic feet per secondMar 25, 1947: 10.52 ft, minor floodingApr 16, 1948: 11.39 ft, minor flooding; 2,310 cubic feet per secondMar 27, 1949: 8.05 ft, action stage; 360 cubic feet per secondApr 14, 1950: 12.02 ft, minor flooding; 1,790 cubic feet per secondApr 7, 1951: 8.96 ft, action stageApr 7, 1952: 12.10 ft, minor flooding; 1,890 cubic feet per secondApr 6, 1954: 11.52 ft, minor flooding; 2,270 cubic feet per secondApr 1, 1955: 11.61 ft, minor flooding; 1,650 cubic feet per secondMar 28, 1958: 8.55 ft, action stageMar 21, 1960: 11.69 ft, minor flooding; 1,900 cubic feet per secondMar 27, 1962: 9.48 ft, action stageMar 23, 1963: 9.24 ft, action stage; 720 cubic feet per secondApr 1, 1964: 8.36 ft, action stage; 710 cubic feet per secondApr 14, 1965: 10.30 ft, minor floodingMar 12, 1966: 8.31 ft, action stage; 530 cubic feet per secondApr 9, 1967: 11.56 ft, minor flooding; 1,600 cubic feet per secondMar 2, 1968: 10.17 ft, minor floodingApr 4, 1969: 12.65 ft, minor floodingApr 6, 1970: 9.99 ft, action stage; 1,300 cubic feet per secondApr 1, 1971: 10.77 ft, minor flooding; 850 cubic feet per secondMar 16, 1972: 11.65 ft, minor flooding; 1,700 cubic feet per secondMar 30, 1974: 11.45 ft, minor flooding; 1,250 cubic feet per secondApr 23, 1975: 12.01 ft, minor flooding; 4,020 cubic feet per secondMar 24, 1976: 10.26 ft, minor flooding; 1,000 cubic feet per secondMar 23, 1979: 7.12 ft, below flood stage; 357 cubic feet per secondApr 15, 1982: 11.53 ft, minor flooding; 3,150 cubic feet per secondMar 1, 1986: 7.15 ft, below flood stageMar 14, 1994: 7.12 ft, below flood stageFeb 26, 1997: 8.51 ft, action stageMar 24, 1999: 10.90 ft, minor flooding; 2,010 cubic feet per secondMar 26, 2004: 7.14 ft, below flood stageApr 10, 2011: 11.36 ft, minor flooding; 2,858 cubic feet per secondJun 19, 2011: 11.51 ft, minor flooding; 3,118 cubic feet per secondMar 29, 2019: 9.60 ft, action stage Highest, 12.80 ft, Mar 25, 1943 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, East Fork Poplar River near Intl Boundary 1930s: 3 1940s: 4 1950s: 4 1960s: 5 5 1970s: 5 1980s: 1 1990s: 1 2000s: 0 2010s: 2 1930s1940s1950s1960s1970s1980s1990s2000s2010s
  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

Highest listed crests, East Fork Poplar River near Intl Boundary
1Mar 25, 194312.80+2.80Minor2,050
2Apr 4, 196912.65+2.65Minor—
3Mar 22, 193912.40+2.40Minor2,760
4Apr 7, 195212.10+2.10Minor1,890
5Apr 14, 195012.02+2.02Minor1,790
6Apr 23, 197512.01+2.01Minor4,020
7Mar 21, 196011.69+1.69Minor1,900
8Mar 16, 197211.65+1.65Minor1,700
9Apr 1, 195511.61+1.61Minor1,650
10Apr 9, 196711.56+1.56Minor1,600
11Apr 15, 198211.53+1.53Minor3,150
12Apr 6, 195411.52+1.52Minor2,270
13Jun 19, 201111.51+1.51Minor3,118
14Mar 30, 197411.45+1.45Minor1,250
15Apr 16, 194811.39+1.39Minor2,310
16Apr 10, 201111.36+1.36Minor2,858
17Mar 15, 193811.08+1.08Minor950
18Mar 24, 199910.90+0.90Minor2,010
19Apr 1, 197110.77+0.77Minor850
20Aug 13, 193210.70+0.70Minor2,030
21Mar 25, 194710.52+0.52Minor—
22Apr 14, 196510.30+0.30Minor—
23Mar 24, 197610.26+0.26Minor1,000
24Mar 14, 194610.21+0.21Minor522
25Mar 2, 196810.17+0.17Minor—
26Apr 6, 19709.99−0.01Action1,300
27Apr 15, 19409.60−0.40Action953
28Mar 29, 20199.60−0.40Action—
29Mar 27, 19629.48−0.52Action—
30Apr 10, 19369.33−0.67Action—
31Mar 23, 19639.24−0.76Action720
32Apr 7, 19518.96−1.04Action—
33Mar 27, 19418.87−1.13Action752
34Mar 28, 19588.55−1.45Action—
35Feb 26, 19978.51−1.49Action—
36Apr 1, 19648.36−1.64Action710
37Mar 12, 19668.31−1.69Action530
38Mar 27, 19498.05−1.95Action360
39Mar 13, 19437.91−2.09Below flood stage—
40Mar 18, 19357.90−2.10Below flood stage350
41Mar 13, 19457.20−2.80Below flood stage180
42Mar 1, 19867.15−2.85Below flood stage—
43Mar 26, 20047.14−2.86Below flood stage—
44Mar 23, 19797.12−2.88Below flood stage357
45Mar 14, 19947.12−2.88Below flood stage—

Other gauges in Daniels County

Flood gauges in Daniels County
Intl Boundary6.010.45 ft, Apr 6, 19540

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

NOAA National Water Prediction Service, gauge EPRM8, 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.