Select a point:
Lansing - Lynxville - McGregor - Guttenberg - Dubuque
Dubuque Railroad Bridge - Bellevue
 
Mississippi River at Lansing
Mississippi River at Lansing
  
Flood Categories
Record22.50 feet - 4/24/1965
Major20
Moderate19
Minor / Flood Stage17 feet
Action Stage12 feet
  
River Level Impacts
18.2 feetLock and Dam 9 goes out of operation
20 feetThe Wisconsin Highway 82 river crossing between Highway 35 and Lansing is closed
21 feetDairyland Power becomes inoperative
23 feetInterstate Power steam plant becomes inoperative
24 feetThe water reaches the top of the dikes
  
Mississippi River at Lynxville
Mississippi River at Lynxville
  
Flood Categories
Record633.16 feet
Major631 feet 
Moderate628
Minor / Flood Stage625 feet
Action Stage619 feet
  
River Level Impacts
631 feetLock and dam 9 is closed to navigation
633 feetWater begins to flow over the lock walls and the protective earthen dikes at Dam 9
  
Mississippi River at McGregor
Mississippi River at McGregor
  
Flood Categories
Record25.38 feet - 4/24/1965
Major22 feet
Moderate19 feet
Minor / Flood Stage16 feet
Action Stage13 feet
 
River Level Impacts
16 feetThe Washington Street Bridge to Saint Feriole Island begins to flood and is closed. Pumping operations are underway
18 feetPumping operations begin at the Prairie du Chien waste water treatment facility
22 feetWater covers the north end of Main Street
25 feetMajor flooding occurs in McGregor
27.9 feetThe water overtops the levee
 
Mississippi River at Guttenberg
Mississippi River at Guttenberg
 
Flood Categories
Record23.65 - 4/24/1965
Major21 feet
Moderate18 feet
Minor / Flood Stage15 feet
Action Stage12 feet
 
River Level Impacts
15 feetMinor lowland flooding begins to occur
19 feetThe water is over Island Road
21 feetFlooding of some residential areas occurs. Lock and Dam 10 is closed to navigation
24 feetWater begins to flow over the lock walls and the protective earthen dikes
29.6 feetThe water begins to overtop the protective levee
 
Mississippi River at Dubuque
Mississippi River at Dubuque (LD11)
  
Flood Categories
Record25.69 feet - 4/26/1965
Major20.5 feet
Moderate17 feet
Minor / Flood Stage16 feet
Action Stage15 feet
 
River Level Impacts
21.3 feetLock and Dam 11 is closed
22 feetWater affects Volunteer Drive leading to Lock and Dam 11
 
Mississippi River at Dubuque (Railroad Bridge)
Mississippi River at Dubuque (Railroad Bridge)
  
Flood Categories
Record26.81 feet - 4/26/1965
Major21.5 feet
Moderate18 feet
Minor / Flood Stage17 feet
Action Stage15 feet
  
River Level Impacts
14 feetWater inundates the lower end of City Island
20 feetWater reaches the base of the flood wall at the Ice Harbor. Most of the houses on the river side of the East Dubuque levee are in water
28.5 feetWater overtops the East Dubuque levee
32 feetWater overtops the Dubuque flood wall and levee at their lowest points
34.6 feetWater reaches the top of the flood wall at Kerper in Dubuque
 
Mississippi River at Bellevue
Mississippi River at Bellevue
  
Flood Categories
Record23.51 feet - 4/26/1965
Major20 feet
Moderate18 feet
Minor / Flood Stage17 feet
Action Stage16 feet
  
River Level Impacts
14 feetWater affects the camping areas at Blanding Landing and Pleasant Creek Recreation Areas
18.39 feetLock and Dam 12 is closed
25 feetWater affects Mill Creek Park in Bellevue
26.7 feetWater reaches the top of the dike at Sabula
27.5 feetWater affects the Iowa causeway. Water is also on U.S. Highway 52 through Sabula Lakes