Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

St. Regis River near St. Regis

Highest listed crest 14.90 ftFlood stage 8.0 ft22 crests since 1933

The St. Regis River near St. Regis crested above flood stage 4 times among the 22 crests the National Weather Service lists from 1933 to 2025. The highest, 14.90 ft on December 20, 1933, was minor flooding, 6.90 feet above flood stage.

The gauge

Highest listed crest
14.90 ft
December 20, 1933; 29,000 cubic feet per second
Flood stage
8.0 ft
No major stage set
Crests at major
0
4 above flood stage
Most recent flood crest
March 19, 2017
8.16 ft, minor flooding
Location
Mineral County
Montana

Flood stages

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

Flood categories, St. Regis River near St. Regis
Action stage7.54Apr 25, 2012The level at which the NWS or its partners begin to take action
Flood stage (minor)8.04Mar 19, 2017Minimal or no property damage, but possibly some public threat

Every listed crest

22 crests from 1933 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the St. Regis River near St. Regis, 1933 to 2025 46810121416ft Flood stage 8.0 ft Dec 20, 1933: 14.90 ft, minor flooding; 29,000 cubic feet per secondMay 19, 1954: 9.40 ft, minor flooding; 11,000 cubic feet per secondJun 8, 1964: 6.16 ft, below flood stageApr 21, 1965: 6.46 ft, below flood stageMay 23, 1967: 6.52 ft, below flood stage; 7,260 cubic feet per secondMay 13, 1971: 6.67 ft, below flood stage; 7,640 cubic feet per secondJun 1, 1972: 6.44 ft, below flood stageJan 16, 1974: 7.38 ft, below flood stage; 9,630 cubic feet per secondNov 30, 1995: 7.64 ft, action stage; 10,840 cubic feet per secondFeb 9, 1996: 8.26 ft, minor floodingMay 17, 1997: 7.80 ft, action stageApr 15, 2002: 7.49 ft, below flood stage; 9,152 cubic feet per secondMay 18, 2008: 7.80 ft, action stage; 5,500 cubic feet per secondMay 16, 2011: 7.20 ft, below flood stage; 4,540 cubic feet per secondApr 25, 2012: 7.53 ft, action stage; 5,060 cubic feet per secondMar 19, 2017: 8.16 ft, minor flooding; 5,820 cubic feet per secondMay 7, 2018: 6.99 ft, below flood stage; 4,110 cubic feet per secondMay 31, 2020: 5.26 ft, below flood stage; 2,230 cubic feet per secondMay 18, 2021: 4.86 ft, below flood stage; 1,760 cubic feet per secondMay 7, 2022: 6.27 ft, below flood stage; 3,300 cubic feet per secondMay 4, 2025: 4.72 ft, below flood stage; 1,750 cubic feet per secondDec 11, 2025: 7.26 ft, below flood stage; 4,600 cubic feet per second Highest, 14.90 ft, Dec 20, 1933 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, St. Regis River near St. Regis 1930s: 1 1 1940s: 0 1950s: 1 1960s: 0 1970s: 0 1980s: 0 1990s: 1 2000s: 0 2010s: 1 2020s: 0 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.
  3. 4 crests measured on an earlier gauge datum are left out: 6.16 ft on Apr 25, 1911; 7.70 ft on May 28, 1913; 7.50 ft on May 7, 1916; 8.65 ft on May 28, 1917.

Highest crests

Highest listed crests, St. Regis River near St. Regis
1Dec 20, 193314.90+6.90Minor29,000
2May 19, 19549.40+1.40Minor11,000
3Feb 9, 19968.26+0.26Minor—
4Mar 19, 20178.16+0.16Minor5,820
5May 17, 19977.80−0.20Action—
6May 18, 20087.80−0.20Action5,500
7Nov 30, 19957.64−0.36Action10,840
8Apr 25, 20127.53−0.47Action5,060
9Apr 15, 20027.49−0.51Below flood stage9,152
10Jan 16, 19747.38−0.62Below flood stage9,630
11Dec 11, 20257.26−0.74Below flood stage4,600
12May 16, 20117.20−0.80Below flood stage4,540
13May 7, 20186.99−1.01Below flood stage4,110
14May 13, 19716.67−1.33Below flood stage7,640
15May 23, 19676.52−1.48Below flood stage7,260
16Apr 21, 19656.46−1.54Below flood stage—
17Jun 1, 19726.44−1.56Below flood stage—
18May 7, 20226.27−1.73Below flood stage3,300
19Jun 8, 19646.16−1.84Below flood stage—
20May 31, 20205.26−2.74Below flood stage2,230
21May 18, 20214.86−3.14Below flood stage1,760
22May 4, 20254.72−3.28Below flood stage1,750

Other gauges in Mineral County

Flood gauges in Mineral County
St. Regis19.020.27 ft, May 18, 19970

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

NOAA National Water Prediction Service, gauge STRM8, 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.