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North Platte River at Casper

Highest listed crest 8.34 ftFlood stage 8.0 ft21 crests since 1973

The North Platte River at Casper crested above flood stage 1 time among the 21 crests the National Weather Service lists from 1973 to 2025. The highest, 8.34 ft on June 9, 1984, was minor flooding, 0.34 feet above flood stage.

The gauge

Highest listed crest
8.34 ft
June 9, 1984; 8,600 cubic feet per second
Flood stage
8.0 ft
Major flooding from 10.0 ft
Crests at major
0
1 above flood stage
Most recent flood crest
June 9, 1984
8.34 ft, minor flooding
Location
Natrona County
Near Casper (0.9 mi)
Identifiers
NWS CPRW4
No USGS station

Flood stages

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

Flood categories, North Platte River at Casper
Action stage7.04Jun 20, 2011The level at which the NWS or its partners begin to take action
Flood stage (minor)8.01Jun 9, 1984Minimal or no property damage, but possibly some public threat
Moderate flood stage9.00—Some inundation of structures and roads near the stream
Major flood stage10.00—Extensive inundation of structures and roads

Every listed crest

21 crests from 1973 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the North Platte River at Casper, 1973 to 2025 246810ft Flood stage 8.0 ftMajor 10.0 ft Jun 12, 1973: 7.18 ft, action stage; 7,248 cubic feet per secondJun 23, 1983: 7.66 ft, action stage; 8,274 cubic feet per secondJun 9, 1984: 8.34 ft, minor flooding; 8,600 cubic feet per secondMay 23, 2008: 4.09 ft, below flood stage; 4,100 cubic feet per secondApr 3, 2009: 4.14 ft, below flood stage; 4,092 cubic feet per secondJun 25, 2010: 7.19 ft, action stage; 7,154 cubic feet per secondJun 20, 2011: 7.90 ft, action stage; 8,615 cubic feet per secondMay 26, 2012: 4.54 ft, below flood stage; 3,990 cubic feet per secondJul 19, 2013: 3.96 ft, below flood stage; 3,415 cubic feet per secondJul 15, 2014: 3.87 ft, below flood stage; 3,386 cubic feet per secondMar 19, 2015: 4.01 ft, below flood stage; 4,107 cubic feet per secondJun 13, 2016: 6.97 ft, below flood stage; 7,435 cubic feet per secondJun 11, 2017: 4.76 ft, below flood stage; 4,780 cubic feet per secondJul 16, 2018: 4.18 ft, below flood stage; 3,810 cubic feet per secondApr 5, 2019: 4.13 ft, below flood stage; 4,245 cubic feet per secondMay 31, 2020: 4.60 ft, below flood stageJun 25, 2021: 4.12 ft, below flood stageJul 28, 2022: 3.77 ft, below flood stageJun 16, 2023: 3.62 ft, below flood stageAug 10, 2024: 4.58 ft, below flood stageJun 1, 2025: 4.46 ft, below flood stage Highest, 8.34 ft, Jun 9, 1984 19801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, North Platte River at Casper 1970s: 0 1980s: 1 1 1990s: 0 2000s: 0 2010s: 0 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, North Platte River at Casper
1Jun 9, 19848.34+0.34Minor8,600
2Jun 20, 20117.90−0.10Action8,615
3Jun 23, 19837.66−0.34Action8,274
4Jun 25, 20107.19−0.81Action7,154
5Jun 12, 19737.18−0.82Action7,248
6Jun 13, 20166.97−1.03Below flood stage7,435
7Jun 11, 20174.76−3.24Below flood stage4,780
8May 31, 20204.60−3.40Below flood stage—
9Aug 10, 20244.58−3.42Below flood stage—
10May 26, 20124.54−3.46Below flood stage3,990
11Jun 1, 20254.46−3.54Below flood stage—
12Jul 16, 20184.18−3.82Below flood stage3,810
13Apr 3, 20094.14−3.86Below flood stage4,092
14Apr 5, 20194.13−3.87Below flood stage4,245
15Jun 25, 20214.12−3.88Below flood stage—
16May 23, 20084.09−3.91Below flood stage4,100
17Mar 19, 20154.01−3.99Below flood stage4,107
18Jul 19, 20133.96−4.04Below flood stage3,415
19Jul 15, 20143.87−4.13Below flood stage3,386
20Jul 28, 20223.77−4.23Below flood stage—
21Jun 16, 20233.62−4.38Below flood stage—

Gauges on the North Platte River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the North Platte River
Casper this gaugeWY8.08.34 ft, Jun 9, 19840
LewellenNE8.08.92 ft, May 27, 20160
LiscoNE4.05.28 ft, Jun 19, 20110
North PlatteNE6.07.73 ft, Jun 21, 20111
SaratogaWY8.510.49 ft, Jun 9, 20110
ScottsbluffNE11.512.74 ft, May 28, 20160
WY-NE State Line nr HenryWY5.56.77 ft, May 11, 20180
GlenrockWY7.07.18 ft, Jun 20, 20110
KeystoneNE6.07.57 ft, Aug 10, 19830
NorthgateCO8.09.45 ft, Mar 21, 20070
OrinWY8.010.45 ft, Jun 12, 19702
SinclairWY9.011.64 ft, Jun 14, 20103
SutherlandNE6.57.11 ft, Jun 21, 20110

Natrona County: every hazard · River floods across the country · Wyoming

NOAA National Water Prediction Service, gauge CPRW4, 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.