Mississippi River Levels

Select a point: Lansing - Lynxville - McGregor - Guttenberg - Dubuque Dubuque Railroad Bridge - Bellevue

Mississippi River at Lansing


Flood Categories
Record	22.50 feet - 4/24/1965
Major	20
Moderate	19
Minor / Flood Stage	17 feet
Action Stage	12 feet

River Level Impacts
18.2 feet	Lock and Dam 9 goes out of operation
20 feet	The Wisconsin Highway 82 river crossing between Highway 35 and Lansing is closed
21 feet	Dairyland Power becomes inoperative
23 feet	Interstate Power steam plant becomes inoperative
24 feet	The water reaches the top of the dikes

Mississippi River at Lynxville


Flood Categories
Record	633.16 feet
Major	631 feet
Moderate	628
Minor / Flood Stage	625 feet
Action Stage	619 feet

River Level Impacts
631 feet	Lock and dam 9 is closed to navigation
633 feet	Water begins to flow over the lock walls and the protective earthen dikes at Dam 9

Mississippi River at McGregor


Flood Categories
Record	25.38 feet - 4/24/1965
Major	22 feet
Moderate	19 feet
Minor / Flood Stage	16 feet
Action Stage	13 feet

River Level Impacts
16 feet	The Washington Street Bridge to Saint Feriole Island begins to flood and is closed. Pumping operations are underway
18 feet	Pumping operations begin at the Prairie du Chien waste water treatment facility
22 feet	Water covers the north end of Main Street
25 feet	Major flooding occurs in McGregor
27.9 feet	The water overtops the levee

Mississippi River at Guttenberg


Flood Categories
Record	23.65 - 4/24/1965
Major	21 feet
Moderate	18 feet
Minor / Flood Stage	15 feet
Action Stage	12 feet

River Level Impacts
15 feet	Minor lowland flooding begins to occur
19 feet	The water is over Island Road
21 feet	Flooding of some residential areas occurs. Lock and Dam 10 is closed to navigation
24 feet	Water begins to flow over the lock walls and the protective earthen dikes
29.6 feet	The water begins to overtop the protective levee

Mississippi River at Dubuque


Flood Categories
Record	25.69 feet - 4/26/1965
Major	20.5 feet
Moderate	17 feet
Minor / Flood Stage	16 feet
Action Stage	15 feet

River Level Impacts
21.3 feet	Lock and Dam 11 is closed
22 feet	Water affects Volunteer Drive leading to Lock and Dam 11

Mississippi River at Dubuque (Railroad Bridge)


Flood Categories
Record	26.81 feet - 4/26/1965
Major	21.5 feet
Moderate	18 feet
Minor / Flood Stage	17 feet
Action Stage	15 feet

River Level Impacts
14 feet	Water inundates the lower end of City Island
20 feet	Water 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 feet	Water overtops the East Dubuque levee
32 feet	Water overtops the Dubuque flood wall and levee at their lowest points
34.6 feet	Water reaches the top of the flood wall at Kerper in Dubuque

Mississippi River at Bellevue


Flood Categories
Record	23.51 feet - 4/26/1965
Major	20 feet
Moderate	18 feet
Minor / Flood Stage	17 feet
Action Stage	16 feet

River Level Impacts
14 feet	Water affects the camping areas at Blanding Landing and Pleasant Creek Recreation Areas
18.39 feet	Lock and Dam 12 is closed
25 feet	Water affects Mill Creek Park in Bellevue
26.7 feet	Water reaches the top of the dike at Sabula
27.5 feet	Water affects the Iowa causeway. Water is also on U.S. Highway 52 through Sabula Lakes