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Mississippi River below Lock and Dam 6 - Trempealeau

Highest listed crest 653.02 ftFlood stage 647.0 ft30 crests since 1942

The Mississippi River below Lock and Dam 6 - Trempealeau crested at major flood stage 4 times among the 30 crests the National Weather Service lists from 1942 to 2024. The highest, 653.02 ft on April 21, 1965, was major flooding, 6.02 feet above flood stage. 38 other gauges on the Mississippi River crested above flood stage within a week of it, 28 at their own highest listed crest.

The gauge

Highest listed crest
653.02 ft
April 21, 1965; 273,000 cubic feet per second
Flood stage
647.0 ft
Major flooding from 651.0 ft
Crests at major
4
34th of 120 gauges in Minnesota
Most recent flood crest
July 2, 2024
649.72 ft, moderate flooding
Location
Winona County
Near Holmen (8.6 mi), Winona (12.1 mi), Onalaska (13.8 mi)
Identifiers
NWS TREW3
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, Mississippi River below Lock and Dam 6 - Trempealeau
Action stage644.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)647.016May 25, 2019Minimal or no property damage, but possibly some public threat
Moderate flood stage649.010Jul 2, 2024Some inundation of structures and roads near the stream
Major flood stage651.04Apr 25, 2023Extensive inundation of structures and roads

Every listed crest

30 crests from 1942 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Mississippi River below Lock and Dam 6 - Trempealeau, 1942 to 2024 646648650652654ft Flood stage 647.0 ftMajor 651.0 ft Jun 4, 1942: 647.08 ft, minor floodingJun 22, 1943: 647.95 ft, minor floodingMay 15, 1950: 647.34 ft, minor floodingApr 18, 1951: 649.55 ft, moderate floodingApr 20, 1952: 649.98 ft, moderate floodingMay 7, 1954: 648.96 ft, minor floodingApr 21, 1965: 653.02 ft, major flooding; 273,000 cubic feet per secondApr 7, 1967: 649.35 ft, moderate floodingApr 19, 1969: 650.80 ft, moderate floodingApr 17, 1971: 647.48 ft, minor floodingMar 20, 1973: 647.81 ft, minor floodingMay 1, 1975: 649.27 ft, moderate floodingApr 27, 1979: 647.27 ft, minor floodingApr 23, 1982: 648.10 ft, minor floodingMar 12, 1983: 647.88 ft, minor floodingApr 7, 1986: 649.12 ft, moderate floodingJun 26, 1993: 649.82 ft, moderate floodingApr 25, 1996: 648.21 ft, minor floodingApr 11, 1997: 651.40 ft, major floodingApr 18, 2001: 651.43 ft, major floodingApr 19, 2002: 647.23 ft, minor floodingMay 17, 2003: 647.01 ft, minor flooding; 118,700 cubic feet per secondSep 26, 2010: 647.71 ft, minor flooding; 138,598 cubic feet per secondApr 15, 2011: 649.27 ft, moderate floodingJul 2, 2014: 648.86 ft, minor flooding; 154,767 cubic feet per secondMay 24, 2017: 647.34 ft, minor flooding; 132,421 cubic feet per secondApr 3, 2019: 649.80 ft, moderate flooding; 180,667 cubic feet per secondMay 25, 2019: 648.53 ft, minor flooding; 153,305 cubic feet per secondApr 25, 2023: 651.01 ft, major floodingJul 2, 2024: 649.72 ft, moderate flooding Highest, 653.02 ft, Apr 21, 1965 1960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Mississippi River below Lock and Dam 6 - Trempealeau 1940s: 2 1950s: 4 1960s: 3 1970s: 4 1980s: 3 1990s: 3 2000s: 3 2010s: 6 6 2020s: 2 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, Mississippi River below Lock and Dam 6 - Trempealeau
1Apr 21, 1965653.02+6.02Major273,000
2Apr 18, 2001651.43+4.43Major—
3Apr 11, 1997651.40+4.40Major—
4Apr 25, 2023651.01+4.01Major—
5Apr 19, 1969650.80+3.80Moderate—
6Apr 20, 1952649.98+2.98Moderate—
7Jun 26, 1993649.82+2.82Moderate—
8Apr 3, 2019649.80+2.80Moderate180,667
9Jul 2, 2024649.72+2.72Moderate—
10Apr 18, 1951649.55+2.55Moderate—
11Apr 7, 1967649.35+2.35Moderate—
12May 1, 1975649.27+2.27Moderate—
13Apr 15, 2011649.27+2.27Moderate—
14Apr 7, 1986649.12+2.12Moderate—
15May 7, 1954648.96+1.96Minor—
16Jul 2, 2014648.86+1.86Minor154,767
17May 25, 2019648.53+1.53Minor153,305
18Apr 25, 1996648.21+1.21Minor—
19Apr 23, 1982648.10+1.10Minor—
20Jun 22, 1943647.95+0.95Minor—
21Mar 12, 1983647.88+0.88Minor—
22Mar 20, 1973647.81+0.81Minor—
23Sep 26, 2010647.71+0.71Minor138,598
24Apr 17, 1971647.48+0.48Minor—
25May 15, 1950647.34+0.34Minor—
26May 24, 2017647.34+0.34Minor132,421
27Apr 27, 1979647.27+0.27Minor—
28Apr 19, 2002647.23+0.23Minor—
29Jun 4, 1942647.08+0.08Minor—
30May 17, 2003647.01+0.01Minor118,700

The worst floods along the Mississippi River

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

April 21, 1965: 653.02 ft here, major flooding

April 18, 2001: 651.43 ft here, major flooding

April 11, 1997: 651.40 ft here, major flooding

Gauges on the Mississippi River

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

Flood gauges on the Mississippi River
TiptonvilleMO37.048.35 ft, May 5, 20112
Alma - Pool 5MN672.0672.13 ft, Apr 16, 20010
AltonIL21.039.55 ft, Aug 1, 19937
Baton RougeLA35.047.28 ft, May 15, 192731
BellevueIL17.023.51 ft, Apr 26, 196511
BrainerdMN16.017.61 ft, Jun 28, 20120
BrownsvilleMN635.0640.20 ft, Apr 22, 19650
BurlingtonIL15.025.73 ft, Jun 17, 200836
CamancheIA17.024.65 ft, Apr 28, 196520
Canton Lock and Dam 20MO15.027.88 ft, Jul 9, 19933
Cape GirardeauMO32.048.86 ft, Jan 2, 201615
CaruthersvilleMO32.047.61 ft, May 7, 20112
ChesterIL27.049.74 ft, Aug 7, 19939
Clarksville Lock and Dam 24MO25.037.73 ft, Jul 29, 199310
ClaytonIA620.0627.28 ft, Apr 24, 19650
DakotaMN644.0649.08 ft, Apr 21, 19650
DonaldsonvilleLA27.036.01 ft, May 15, 19273
Dubuque (LD11)IA16.025.69 ft, Apr 26, 196513
Dubuque (Railroad Bridge)IA17.026.81 ft, Apr 26, 196518
Fort RipleyMN10.514.15 ft, Apr 8, 19970
Fridley abv 37th Ave NEMN16.020.00 ft, Apr 17, 19656
FultonIL16.024.75 ft, Apr 28, 196513
GladstoneIL10.022.46 ft, Jun 17, 200824
GraftonIL20.038.17 ft, Aug 1, 199315
Gregory LandingMO15.028.49 ft, Jul 9, 19934
HannibalMO17.031.80 ft, Jul 15, 199310
HelenaAR44.060.21 ft, Feb 12, 19374
HerculaneumMO26.029.79 ft, Jul 10, 20240
HickmanKY34.054.29 ft, May 2, 20113
Hwy 169 at ChamplinMN12.017.96 ft, Apr 12, 19653
Hwy 610 in Brooklyn ParkMN12.019.53 ft, Apr 17, 19654
Illinois CityIA15.024.10 ft, Jul 9, 199321
KeithsburgIA14.024.49 ft, Jun 17, 200822
KeokukIA16.027.58 ft, Jul 10, 199324
La Crosse - Pool 8WI12.017.89 ft, Apr 22, 19654
LaGrangeMO17.030.00 ft, Jul 13, 19934
Lake CityWI16.022.18 ft, Apr 19, 19653
Lansing - Pool 9IA17.022.50 ft, Apr 24, 19651
LeClaireIA11.017.75 ft, Apr 28, 196516
LouisianaMO15.028.40 ft, Jul 28, 19934
McGregorIA16.025.38 ft, Apr 24, 19653
Mel Price (Alton) Lock and DamIL21.042.72 ft, Aug 1, 19938
MemphisTN34.048.70 ft, Feb 10, 19372
MuscatineIA16.025.61 ft, Jul 9, 199321
NatchezMS48.061.95 ft, May 19, 20116
New BostonIL15.025.90 ft, Jul 9, 199322
New MadridMO34.048.35 ft, May 6, 20114
New OrleansLA17.021.27 ft, Apr 25, 19225
OsceolaAR28.050.90 ft, Feb 7, 193742
QuincyIL19.032.13 ft, Jul 13, 19937
Quincy Lock and Dam 21IL18.031.30 ft, Jul 13, 19937
Red River LandingLA48.063.39 ft, May 18, 20110
Red WingMN14.020.70 ft, Apr 18, 19659
ReserveLA22.026.00 ft, Jun 11, 19291
Rock IslandIL15.022.70 ft, May 2, 201920
Saverton Lock and Dam 22MO16.029.58 ft, Jul 25, 19939
St. CloudMN9.011.44 ft, Apr 8, 19971
St. LouisMO30.049.58 ft, Aug 1, 19939
St. PaulMN14.026.01 ft, Apr 16, 196516
ThebesIL33.047.74 ft, Jan 2, 201612
Tunica Mhoon LandingMS30.053.20 ft, Feb 10, 19375
VicksburgLA43.057.10 ft, May 19, 201112
Wabasha - Pool 4MN12.020.05 ft, Apr 19, 19657
Winfield Lock and Dam 25MO26.039.62 ft, Aug 1, 19939
Winona - Pool 6MN13.020.77 ft, Apr 19, 19655
Lock and Dam 10 - GuttenbergIA15.023.65 ft, Apr 24, 19652
Lock and Dam 2 - HastingsMN15.025.90 ft, Apr 17, 196512
Lock and Dam 3 - Red WingMN680.5687.77 ft, Apr 19, 19658
Lock and Dam 4 - AlmaWI16.019.78 ft, Apr 19, 19652
Lock and Dam 5 - Minnesota CityMN660.0667.85 ft, Apr 19, 19654
Lock and Dam 5a - WinonaMN655.0663.35 ft, Apr 19, 19654
Lock and Dam 6 - Trempealeau this gaugeMN647.0653.02 ft, Apr 21, 19654
Lock and Dam 7 - La CrescentMN641.0647.38 ft, Apr 21, 19652
Lock and Dam 8 - GenoaWI631.0638.40 ft, Apr 22, 19653
Lock and Dam 9 - LynxvilleWI625.0633.16 ft, Apr 24, 19653
AitkinMN13.022.49 ft, May 20, 195011
Arkansas CityAR37.059.20 ft, Apr 21, 192715
GreenvilleAR48.065.40 ft, Apr 21, 192718

Other gauges in Winona County

Flood gauges in Winona County
Whitewater State Park Group Camp39.041.34 ft, May 16, 20170
Dakota644.0649.08 ft, Apr 21, 19650
Winona - Pool 613.020.77 ft, Apr 19, 19655
Lock and Dam 5 - Minnesota City660.0667.85 ft, Apr 19, 19654
Lock and Dam 5a - Winona655.0663.35 ft, Apr 19, 19654
Lock and Dam 7 - La Crescent641.0647.38 ft, Apr 21, 19652
Elba42.045.80 ft, May 16, 20170
Beaver699.0706.00 ft, Aug 19, 20070

Winona County: every hazard · River floods across the country · Minnesota

NOAA National Water Prediction Service, gauge TREW3, 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.