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Snake River near Idaho Falls

Highest listed crest 18.91 ftFlood stage 13.2 ft23 crests since 1993

The Snake River near Idaho Falls crested above flood stage 8 times among the 23 crests the National Weather Service lists from 1993 to 2022. The highest, 18.91 ft on June 16, 1997, was minor flooding, 5.71 feet above flood stage. 8 other gauges on the Snake River crested above flood stage within a week of it, 6 at their own highest listed crest.

The gauge

Highest listed crest
18.91 ft
June 16, 1997; 48,600 cubic feet per second
Flood stage
13.2 ft
No major stage set
Crests at major
0
8 above flood stage
Most recent flood crest
June 3, 2018
13.81 ft, minor flooding
Location
Bonneville County
Near Idaho Falls (8.0 mi), Ammon (10.2 mi)

Flood stages

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

Flood categories, Snake River near Idaho Falls
Action stage12.65Apr 28, 2019The level at which the NWS or its partners begin to take action
Flood stage (minor)13.28Jun 3, 2018Minimal or no property damage, but possibly some public threat

Every listed crest

23 crests from 1993 to 2022. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Snake River near Idaho Falls, 1993 to 2022 8101214161820ft Flood stage 13.2 ft Jun 9, 1993: 12.96 ft, action stage; 21,900 cubic feet per secondMay 24, 1995: 13.07 ft, action stage; 22,200 cubic feet per secondMay 19, 1996: 13.86 ft, minor flooding; 24,600 cubic feet per secondJun 16, 1997: 18.91 ft, minor flooding; 48,600 cubic feet per secondMay 29, 1998: 12.74 ft, action stage; 22,100 cubic feet per secondJun 2, 1999: 14.85 ft, minor flooding; 30,400 cubic feet per secondMay 3, 2006: 13.03 ft, action stage; 23,200 cubic feet per secondMay 26, 2007: 9.71 ft, below flood stage; 11,800 cubic feet per secondJun 2, 2008: 12.45 ft, below flood stage; 21,000 cubic feet per secondJun 24, 2009: 14.28 ft, minor flooding; 27,600 cubic feet per secondJun 14, 2010: 13.59 ft, minor flooding; 25,300 cubic feet per secondMay 28, 2011: 15.24 ft, minor flooding; 32,000 cubic feet per secondApr 29, 2012: 10.42 ft, below flood stage; 14,000 cubic feet per secondMay 21, 2013: 11.14 ft, below flood stage; 16,400 cubic feet per secondJun 9, 2014: 10.77 ft, below flood stage; 15,100 cubic feet per secondMay 18, 2015: 11.35 ft, below flood stage; 16,800 cubic feet per secondJun 9, 2016: 9.80 ft, below flood stage; 11,800 cubic feet per secondJun 16, 2017: 14.16 ft, minor flooding; 27,100 cubic feet per secondJun 3, 2018: 13.81 ft, minor flooding; 25,700 cubic feet per secondApr 28, 2019: 12.64 ft, action stage; 21,300 cubic feet per secondJun 7, 2020: 11.82 ft, below flood stage; 18,400 cubic feet per secondAug 4, 2021: 10.25 ft, below flood stage; 13,100 cubic feet per secondJun 16, 2022: 9.01 ft, below flood stage; 9,500 cubic feet per second Highest, 18.91 ft, Jun 16, 1997 199520002005201020152020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Snake River near Idaho Falls 1990s: 3 2000s: 1 2010s: 4 4 2020s: 0 1990s2000s2010s2020s
  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, Snake River near Idaho Falls
1Jun 16, 199718.91+5.71Minor48,600
2May 28, 201115.24+2.04Minor32,000
3Jun 2, 199914.85+1.65Minor30,400
4Jun 24, 200914.28+1.08Minor27,600
5Jun 16, 201714.16+0.96Minor27,100
6May 19, 199613.86+0.66Minor24,600
7Jun 3, 201813.81+0.61Minor25,700
8Jun 14, 201013.59+0.39Minor25,300
9May 24, 199513.07−0.13Action22,200
10May 3, 200613.03−0.17Action23,200
11Jun 9, 199312.96−0.24Action21,900
12May 29, 199812.74−0.46Action22,100
13Apr 28, 201912.64−0.56Action21,300
14Jun 2, 200812.45−0.75Below flood stage21,000
15Jun 7, 202011.82−1.38Below flood stage18,400
16May 18, 201511.35−1.85Below flood stage16,800
17May 21, 201311.14−2.06Below flood stage16,400
18Jun 9, 201410.77−2.43Below flood stage15,100
19Apr 29, 201210.42−2.78Below flood stage14,000
20Aug 4, 202110.25−2.95Below flood stage13,100
21Jun 9, 20169.80−3.40Below flood stage11,800
22May 26, 20079.71−3.49Below flood stage11,800
23Jun 16, 20229.01−4.19Below flood stage9,500

The worst floods along the Snake River

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

June 16, 1997: 18.91 ft here, minor flooding

May 28, 2011: 15.24 ft here, minor flooding

June 2, 1999: 14.85 ft here, minor flooding

  • BlackfootID · Jun 6, 1999 · 10.74 ft · Minor

Gauges on the Snake River

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

Flood gauges on the Snake River
Flagg RanchWY10.010.75 ft, Jun 5, 19960
MooseWY15.015.25 ft, Jun 11, 19970
JacksonWY10.011.66 ft, Jun 11, 19970
HeiseID8.011.26 ft, Jun 13, 19971
MenanID8.510.57 ft, Jun 9, 20110
Idaho Falls this gaugeID13.218.91 ft, Jun 16, 19970
ShelleyID12.516.97 ft, Jun 17, 19184
BlackfootID10.513.55 ft, Jun 17, 19971
Blackfoot (Tilden Bridge-Ft. Hall)ID11.014.80 ft, Jun 18, 19970
NeeleyID9.511.46 ft, Jun 19, 19970
Minidoka Dam (at Howells Ferry)ID11.516.02 ft, Jun 21, 19180

Other gauges in Bonneville County

Flood gauges in Bonneville County
Heise8.011.26 ft, Jun 13, 19971
Ririe Dam near Ririe12.114.07 ft, May 20, 19750

Bonneville County: every hazard · River floods across the country · Idaho

NOAA National Water Prediction Service, gauge SIFI1, 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.