Search
Menu

Explore

Hazards

Analysis

Rankings

Reference

Blackfoot River above Blackfoot Res nr Henry

Highest listed crest 8.68 ftFlood stage 6.5 ft26 crests since 1970

The Blackfoot River above Blackfoot Res nr Henry crested above flood stage 10 times among the 26 crests the National Weather Service lists from 1970 to 2022. The highest, 8.68 ft on May 9, 1976, was minor flooding, 2.18 feet above flood stage.

The gauge

Highest listed crest
8.68 ft
May 9, 1976; 2,120 cubic feet per second
Flood stage
6.5 ft
No major stage set
Crests at major
0
10 above flood stage
Most recent flood crest
May 16, 2011
7.63 ft, minor flooding
Location
Caribou County
Idaho

Flood stages

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

Flood categories, Blackfoot River above Blackfoot Res nr Henry
Action stage5.55Apr 24, 2020The level at which the NWS or its partners begin to take action
Flood stage (minor)6.510May 16, 2011Minimal or no property damage, but possibly some public threat

Every listed crest

26 crests from 1970 to 2022. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Blackfoot River above Blackfoot Res nr Henry, 1970 to 2022 246810ft Flood stage 6.5 ft May 19, 1970: 7.44 ft, minor flooding; 1,440 cubic feet per secondMay 5, 1971: 8.64 ft, minor flooding; 1,960 cubic feet per secondMay 8, 1972: 7.95 ft, minor flooding; 1,770 cubic feet per secondApr 26, 1974: 8.60 ft, minor flooding; 2,150 cubic feet per secondMay 19, 1975: 7.88 ft, minor flooding; 1,800 cubic feet per secondMay 9, 1976: 8.68 ft, minor flooding; 2,120 cubic feet per secondMay 4, 1982: 8.17 ft, minor flooding; 1,630 cubic feet per secondAug 14, 2001: 5.00 ft, below flood stageApr 29, 2005: 5.22 ft, below flood stage; 706 cubic feet per secondApr 17, 2006: 6.98 ft, minor flooding; 1,370 cubic feet per secondApr 8, 2007: 3.87 ft, below flood stage; 368 cubic feet per secondMay 8, 2008: 5.53 ft, action stage; 798 cubic feet per secondMay 6, 2009: 6.51 ft, minor flooding; 1,370 cubic feet per secondApr 23, 2010: 4.70 ft, below flood stage; 563 cubic feet per secondMay 16, 2011: 7.63 ft, minor flooding; 1,570 cubic feet per secondApr 13, 2012: 4.63 ft, below flood stage; 547 cubic feet per secondApr 29, 2013: 3.96 ft, below flood stage; 387 cubic feet per secondApr 24, 2014: 4.74 ft, below flood stage; 575 cubic feet per secondMay 29, 2015: 4.15 ft, below flood stage; 429 cubic feet per secondApr 15, 2016: 5.42 ft, below flood stage; 765 cubic feet per secondApr 15, 2017: 6.29 ft, action stage; 1,050 cubic feet per secondApr 24, 2018: 5.62 ft, action stage; 825 cubic feet per secondApr 26, 2019: 5.98 ft, action stage; 941 cubic feet per secondApr 24, 2020: 5.91 ft, action stage; 918 cubic feet per secondApr 14, 2021: 3.42 ft, below flood stage; 275 cubic feet per secondMay 4, 2022: 4.92 ft, below flood stage; 674 cubic feet per second Highest, 8.68 ft, May 9, 1976 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Blackfoot River above Blackfoot Res nr Henry 1970s: 6 6 1980s: 1 1990s: 0 2000s: 2 2010s: 1 2020s: 0 1970s1980s1990s2000s2010s2020s
  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, Blackfoot River above Blackfoot Res nr Henry
1May 9, 19768.68+2.18Minor2,120
2May 5, 19718.64+2.14Minor1,960
3Apr 26, 19748.60+2.10Minor2,150
4May 4, 19828.17+1.67Minor1,630
5May 8, 19727.95+1.45Minor1,770
6May 19, 19757.88+1.38Minor1,800
7May 16, 20117.63+1.13Minor1,570
8May 19, 19707.44+0.94Minor1,440
9Apr 17, 20066.98+0.48Minor1,370
10May 6, 20096.51+0.01Minor1,370
11Apr 15, 20176.29−0.21Action1,050
12Apr 26, 20195.98−0.52Action941
13Apr 24, 20205.91−0.59Action918
14Apr 24, 20185.62−0.88Action825
15May 8, 20085.53−0.97Action798
16Apr 15, 20165.42−1.08Below flood stage765
17Apr 29, 20055.22−1.28Below flood stage706
18Aug 14, 20015.00−1.50Below flood stage—
19May 4, 20224.92−1.58Below flood stage674
20Apr 24, 20144.74−1.76Below flood stage575
21Apr 23, 20104.70−1.80Below flood stage563
22Apr 13, 20124.63−1.87Below flood stage547
23May 29, 20154.15−2.35Below flood stage429
24Apr 29, 20133.96−2.54Below flood stage387
25Apr 8, 20073.87−2.63Below flood stage368
26Apr 14, 20213.42−3.08Below flood stage275

Gauges on the Blackfoot River

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

Flood gauges on the Blackfoot River
Blackfoot Res nr Henry this gaugeID6.58.68 ft, May 9, 19760
Shelley (Wolverine Canyon)ID8.59.10 ft, May 16, 19870
Blackfoot (Butte Road-Ft. Hall)ID5.86.77 ft, Jun 16, 19970

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

NOAA National Water Prediction Service, gauge BKHI1, 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.