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Little Salmon River at Riggins

Highest listed crest 12.18 ftFlood stage 10.0 ft16 crests since 1948

The Little Salmon River at Riggins crested above flood stage 7 times among the 16 crests the National Weather Service lists from 1948 to 2025. The highest, 12.18 ft on June 17, 1974, was minor flooding, 2.18 feet above flood stage.

The gauge

Highest listed crest
12.18 ft
June 17, 1974; 12,600 cubic feet per second
Flood stage
10.0 ft
No major stage set
Crests at major
0
7 above flood stage
Most recent flood crest
June 4, 2010
10.26 ft, minor flooding
Location
Idaho County
Idaho

Flood stages

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

Flood categories, Little Salmon River at Riggins
Action stage9.06Jun 5, 2017The level at which the NWS or its partners begin to take action
Flood stage (minor)10.07Jun 4, 2010Minimal or no property damage, but possibly some public threat

Every listed crest

16 crests from 1948 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Little Salmon River at Riggins, 1948 to 2025 8910111213ft Flood stage 10.0 ft Jun 1, 1948: 10.70 ft, minor flooding; 9,200 cubic feet per secondDec 22, 1955: 10.40 ft, minor flooding; 8,500 cubic feet per secondMay 13, 1971: 10.12 ft, minor flooding; 5,520 cubic feet per secondJan 16, 1974: 11.00 ft, minor flooding; 9,700 cubic feet per secondJun 17, 1974: 12.18 ft, minor flooding; 12,600 cubic feet per secondMay 18, 1996: 9.80 ft, action stage; 7,520 cubic feet per secondJan 1, 1997: 12.00 ft, minor flooding; 10,500 cubic feet per secondMay 25, 1999: 9.29 ft, action stage; 6,280 cubic feet per secondMay 30, 2003: 9.96 ft, action stage; 7,230 cubic feet per secondMay 20, 2006: 9.75 ft, action stage; 6,920 cubic feet per secondJun 4, 2010: 10.26 ft, minor flooding; 8,710 cubic feet per secondApr 26, 2012: 9.10 ft, action stage; 7,090 cubic feet per secondJun 5, 2017: 9.00 ft, action stage; 6,180 cubic feet per secondMay 31, 2020: 8.64 ft, below flood stage; 5,620 cubic feet per secondJun 11, 2022: 8.73 ft, below flood stage; 5,760 cubic feet per secondMay 29, 2025: 8.20 ft, below flood stage; 4,951 cubic feet per second Highest, 12.18 ft, Jun 17, 1974 19501960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Little Salmon River at Riggins 1940s: 1 1950s: 1 1960s: 0 1970s: 3 3 1980s: 0 1990s: 1 2000s: 0 2010s: 1 2020s: 0 1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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, Little Salmon River at Riggins
1Jun 17, 197412.18+2.18Minor12,600
2Jan 1, 199712.00+2.00Minor10,500
3Jan 16, 197411.00+1.00Minor9,700
4Jun 1, 194810.70+0.70Minor9,200
5Dec 22, 195510.40+0.40Minor8,500
6Jun 4, 201010.26+0.26Minor8,710
7May 13, 197110.12+0.12Minor5,520
8May 30, 20039.96−0.04Action7,230
9May 18, 19969.80−0.20Action7,520
10May 20, 20069.75−0.25Action6,920
11May 25, 19999.29−0.71Action6,280
12Apr 26, 20129.10−0.90Action7,090
13Jun 5, 20179.00−1.00Action6,180
14Jun 11, 20228.73−1.27Below flood stage5,760
15May 31, 20208.64−1.36Below flood stage5,620
16May 29, 20258.20−1.80Below flood stage4,951

Other gauges in Idaho County

Flood gauges in Idaho County
White Bird32.037.50 ft, Jun 1, 18942
Lowell14.016.04 ft, May 29, 19480
Stites8.010.79 ft, Apr 9, 20190

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

NOAA National Water Prediction Service, gauge RIGI1, 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.