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American Fork River near American Fork

Highest listed crest 9.00 ftFlood stage 8.5 ft12 crests since 1958

The American Fork River near American Fork crested at major flood stage 1 time among the 12 crests the National Weather Service lists from 1958 to 2019. The highest, 9.00 ft on May 31, 1983, was major flooding, 0.50 feet above flood stage.

The gauge

Highest listed crest
9.00 ft
May 31, 1983; 1,000 cubic feet per second
Flood stage
8.5 ft
Major flooding from 9.0 ft
Crests at major
1
12th of 40 gauges in Utah
Most recent flood crest
May 31, 1983
9.00 ft, major flooding
Location
Utah County
Near Alpine (4.9 mi), Pleasant Grove (6.1 mi), Highland (6.1 mi)

Flood stages

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

Flood categories, American Fork River near American Fork
Action stage8.20—The level at which the NWS or its partners begin to take action
Flood stage (minor)8.50—Minimal or no property damage, but possibly some public threat
Moderate flood stage8.70—Some inundation of structures and roads near the stream
Major flood stage9.01May 31, 1983Extensive inundation of structures and roads

Every listed crest

12 crests from 1958 to 2019. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the American Fork River near American Fork, 1958 to 2019 6.577.588.59ft Flood stage 8.5 ftMajor 9.0 ft May 26, 1958: 7.40 ft, below flood stage; 624 cubic feet per secondJun 15, 1975: 7.20 ft, below flood stage; 585 cubic feet per secondJun 11, 1980: 7.20 ft, below flood stage; 529 cubic feet per secondMay 31, 1983: 9.00 ft, major flooding; 1,000 cubic feet per secondJun 1, 1986: 7.90 ft, below flood stage; 600 cubic feet per secondJun 8, 1986: 7.86 ft, below flood stage; 595 cubic feet per secondMay 28, 2014: 7.19 ft, below flood stage; 232 cubic feet per secondJun 2, 2015: 6.81 ft, below flood stage; 137 cubic feet per secondJun 7, 2016: 7.23 ft, below flood stage; 305 cubic feet per secondJun 7, 2017: 7.47 ft, below flood stage; 428 cubic feet per secondMay 23, 2018: 6.85 ft, below flood stage; 127 cubic feet per secondJun 8, 2019: 7.55 ft, below flood stage; 434 cubic feet per second Highest, 9.00 ft, May 31, 1983 1960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, American Fork River near American Fork 1950s: 0 1960s: 0 1970s: 0 1980s: 1 1 1990s: 0 2000s: 0 2010s: 0 1950s1960s1970s1980s1990s2000s2010s
  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, American Fork River near American Fork
1May 31, 19839.00+0.50Major1,000
2Jun 1, 19867.90−0.60Below flood stage600
3Jun 8, 19867.86−0.64Below flood stage595
4Jun 8, 20197.55−0.95Below flood stage434
5Jun 7, 20177.47−1.03Below flood stage428
6May 26, 19587.40−1.10Below flood stage624
7Jun 7, 20167.23−1.27Below flood stage305
8Jun 15, 19757.20−1.30Below flood stage585
9Jun 11, 19807.20−1.30Below flood stage529
10May 28, 20147.19−1.31Below flood stage232
11May 23, 20186.85−1.65Below flood stage127
12Jun 2, 20156.81−1.69Below flood stage137

Other gauges in Utah County

Flood gauges in Utah County
Castilla9.011.53 ft, May 15, 19841
Cedar Fort5.47.50 ft, Aug 28, 19711

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

NOAA National Water Prediction Service, gauge AFPU1, 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.