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Mississippi River at Lansing - Pool 9

Highest listed crest 22.50 ftFlood stage 17.0 ft17 crests since 1880

The Mississippi River at Lansing - Pool 9 crested at major flood stage 1 time among the 17 crests the National Weather Service lists from 1880 to 2024. The highest, 22.50 ft on April 24, 1965, was major flooding, 5.50 feet above flood stage. 43 other gauges on the Mississippi River crested above flood stage within a week of it, 27 at their own highest listed crest.

The gauge

Highest listed crest
22.50 ft
April 24, 1965
Flood stage
17.0 ft
Major flooding from 20.0 ft
Crests at major
1
93rd of 203 gauges in Iowa
Most recent flood crest
July 5, 2024
18.06 ft, minor flooding
Location
Allamakee County
Iowa
Identifiers
NWS LNSI4
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 at Lansing - Pool 9
Action stage12.01Apr 10, 1986The level at which the NWS or its partners begin to take action
Flood stage (minor)17.012Jul 5, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage19.03Apr 28, 2023Some inundation of structures and roads near the stream
Major flood stage20.01Apr 24, 1965Extensive inundation of structures and roads

Every listed crest

17 crests from 1880 to 2024. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Mississippi River at Lansing - Pool 9, 1880 to 2024 1618202224ft Flood stage 17.0 ftMajor 20.0 ft Jun 20, 1880: 19.90 ft, moderate floodingApr 20, 1951: 17.62 ft, minor floodingApr 23, 1952: 18.14 ft, minor floodingApr 24, 1965: 22.50 ft, major floodingApr 9, 1967: 17.18 ft, minor floodingApr 22, 1969: 18.88 ft, minor floodingMay 4, 1975: 17.76 ft, minor floodingApr 10, 1986: 16.80 ft, action stageJun 30, 1993: 18.46 ft, minor floodingApr 15, 1997: 18.38 ft, minor floodingApr 21, 2001: 19.93 ft, moderate floodingApr 18, 2011: 17.61 ft, minor floodingApr 4, 2019: 17.89 ft, minor flooding; 198,130 cubic feet per secondApr 26, 2019: 17.83 ft, minor flooding; 197,110 cubic feet per secondMay 1, 2019: 17.03 ft, minor flooding; 183,510 cubic feet per secondApr 28, 2023: 19.61 ft, moderate floodingJul 5, 2024: 18.06 ft, minor flooding Highest, 22.50 ft, Apr 24, 1965 18801900192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Mississippi River at Lansing - Pool 9 1880s: 1 1890s: 0 1900s: 0 1910s: 0 1920s: 0 1930s: 0 1940s: 0 1950s: 2 1960s: 3 1970s: 1 1980s: 0 1990s: 2 2000s: 1 2010s: 4 4 2020s: 2 1880s1900s1920s1940s1960s1980s2000s2020s
  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 at Lansing - Pool 9
1Apr 24, 196522.50+5.50Major—
2Apr 21, 200119.93+2.93Moderate—
3Jun 20, 188019.90+2.90Moderate—
4Apr 28, 202319.61+2.61Moderate—
5Apr 22, 196918.88+1.88Minor—
6Jun 30, 199318.46+1.46Minor—
7Apr 15, 199718.38+1.38Minor—
8Apr 23, 195218.14+1.14Minor—
9Jul 5, 202418.06+1.06Minor—
10Apr 4, 201917.89+0.89Minor198,130
11Apr 26, 201917.83+0.83Minor197,110
12May 4, 197517.76+0.76Minor—
13Apr 20, 195117.62+0.62Minor—
14Apr 18, 201117.61+0.61Minor—
15Apr 9, 196717.18+0.18Minor—
16May 1, 201917.03+0.03Minor183,510
17Apr 10, 198616.80−0.20Action—

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 24, 1965: 22.50 ft here, major flooding

April 21, 2001: 19.93 ft here, moderate flooding

June 20, 1880: 19.90 ft here, moderate 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 9 this gaugeIA17.022.50 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 - TrempealeauMN647.0653.02 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 Allamakee County

Flood gauges in Allamakee County
Dorchester14.024.30 ft, Aug 25, 20169
Dorchester10.015.05 ft, Jul 2, 20267
Ion13.017.11 ft, Feb 10, 20091

Allamakee County: every hazard · River floods across the country · Iowa

NOAA National Water Prediction Service, gauge LNSI4, 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.