List of locks and dams of the Upper Mississippi River

This is a list of current and former locks and dams of the Upper Mississippi River

Upper Mississippi River

The Upper Mississippi River is the portion of the Mississippi River upstream of Cairo, Illinois, United States. From the headwaters at Lake Itasca, Minnesota, the river flows approximately 2000 kilometers to Cairo, where it is joined by the Ohio River to form the Lower Mississippi...

which begins at the Mississippi River

Mississippi River

The Mississippi River is the largest river system in North America. Flowing entirely in the United States, this river rises in western Minnesota and meanders slowly southwards for to the Mississippi River Delta at the Gulf of Mexico. With its many tributaries, the Mississippi's watershed drains...

's confluence with the Ohio River

Ohio River

The Ohio River is the largest tributary, by volume, of the Mississippi River. At the confluence, the Ohio is even bigger than the Mississippi and, thus, is hydrologically the main stream of the whole river system, including the Allegheny River further upstream...

at Cairo, Illinois

Cairo, Illinois

Cairo is the southernmost city in the U.S. state of Illinois. It is the county seat of Alexander County. Cairo is located at the confluence of the Mississippi and Ohio rivers. The rivers converge at Fort Defiance State Park, an American Civil War fort that was commanded by General Ulysses S. Grant...

Locks and Dams

{| class="wikitable" width="95%"
|-
!Name
!Location
!Miles above the Ohio
!width="15%"|Coordinates
!Pool Elevation
!Notes
|-
!colspan=6|

Minnesota
Minnesota
Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

|-
|Lake Itasca

Lake Itasca

Lake Itasca is a small glacial lake, approximately in area, in the Headwaters area of north central Minnesota. The lake is located in southeastern Clearwater County within Itasca State Park and it has an average depth of 20–35 feet , and is 1,475 ft above sea level.The Ojibwe name for...

Stepping Stones / Dam
|Itasca State Park

Itasca State Park

Itasca State Park is a state park of Minnesota, United States, and contains the headwaters of the Mississippi River. The park spans of northern Minnesota, and is located about north of Park Rapids, Minnesota and from Bagley, Minnesota...

|
|
|Lake Itasca

Lake Itasca

1,475 feet
|Stepping stones placed by CCC

Civilian Conservation Corps

The Civilian Conservation Corps was a public work relief program that operated from 1933 to 1942 in the United States for unemployed, unmarried men from relief families, ages 18–25. A part of the New Deal of President Franklin D...

Bemidji, Minnesota

Bemidji is a city in Beltrami County, Minnesota, United States. Its population was at 13,431 at the 2010 census. It is the county seat of Beltrami County. Bemidji is the most major city in North Central Minnesota and the largest commercial center between Grand Forks, North Dakota and Duluth,...

|
|
|Lake Bemidji

Lake Bemidji

Lake Bemidji is a small glacially-formed lake, approximately 11 mi² in area, in northern Minnesota in the United States. Located less than 50 mi downstream from the source of the Mississippi River, it both receives and is drained by the Mississippi.-Geography:The lake is located in southern...

1,335 feet
|
|-
|Knutson Dam
|About 15 miles (24.1 km) east and north of city of Cass Lake

Cass Lake, Minnesota

As of the census of 2000, there were 860 people, 331 households, and 192 families residing in the city. The population density was 753.2 people per square mile . There were 384 housing units at an average density of 336.3 per square mile . The racial makeup of the city was 30.12% White, 64.42%...

|
|47°27′07"N 94°29′00"W
|Cass Lake

Cass Lake (Minnesota)

Cass Lake is a glacially-formed lake in north central Minnesota in the United States. It is approximately long and wide, located in Cass and Beltrami counties, within the Chippewa National Forest and the Leech Lake Indian Reservation, adjacent to its namesake city of Cass Lake...

1,301 feet
|
|-
|Winnibigoshish Lake Dam

Winnibigoshish Lake Dam

The original Winnibigoshish Lake Dam was built 1881-1884, in order to regulate the flow of water on the Upper Mississippi River. A constant flow was desired by loggers, fur traders, and millers downstream at St. Anthony Falls. The dam crosses the county line between Cass County and Itasca County,...

|About 15 miles (24.1 km) northwest of Deer River

Deer River, Minnesota

As of the census of 2000, there were 903 people, 389 households, and 220 families residing in the city. The population density was 850.9 people per square mile . There were 415 housing units at an average density of 391.1 per square mile . The racial makeup of the city was 84.05% White, 12.07%...

|
|47°25′44.5"N 94°03′6.8"W
|Lake Winnibigoshish

Lake Winnibigoshish

Lake Winnibigoshish is a body of water in north central Minnesota, in the Chippewa National Forest. Its name comes from the Ojibwe language Wiinibiigoozhish...

Brainerd, Minnesota

Brainerd is a city in Crow Wing County, Minnesota, United States. The population was 13,590 at the 2010 census. It is the county seat of Crow Wing County and one of the largest cities in Central Minnesota...

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|
|
|-
|Little Falls Dam

Little Falls Dam

Little Falls Dam is a hydroelectric dam across the Mississippi River in the city of Little Falls, Minnesota, United States.-History:The Little Falls Mill and Land Company was formed in 1849 to build a dam and a sawmill to supply lumber for buildings at Fort Ripley; but when settlers showed up in...

|Little Falls, Minnesota

Little Falls, Minnesota

As of the census of 2000, there were 7,719 people , 3,197 households, and 1,899 families residing in the city. The population density was 1,232.5 people per square mile . There were 3,358 housing units at an average density of 536.2 per square mile...

|
|45°58′32"N 94°22′06"W
|
|-
|Blanchard Dam

Blanchard Dam

Blanchard Dam is a dam across the Mississippi River near the city of Royalton, Minnesota, United States. Blanchard is a hydroelectric station owned and operated by Minnesota Power. The dam sits slightly upriver from the former Soo Line rail bridge over the Mississippi...

|Royalton, Minnesota

Royalton, Minnesota

As of the census of 2000, there were 816 people, 322 households, and 209 families residing in the city. The population density was 473.7 people per square mile . There were 328 housing units at an average density of 190.4 per square mile . The racial makeup of the city was 98.77% White, 0.25%...

|
|45°51′39"N 94°21′36"W
|
|
|-
|Sartell Dam

Sartell Dam

The Sartell Dam is a dam across the Mississippi River in Sartell, Minnesota in the United States. The dam generates hydroelectric power for the adjoining Sartell Paper Mill. The dam is referred to as the Champion Dam in official documentation....

|Sartell, Minnesota

Sartell, Minnesota

Sartell is a city in Benton and Stearns counties in the U.S. state of Minnesota. It is part of the St. Cloud Metropolitan Statistical Area. The population was 15,876 at the 2010 census, making it St. Cloud's most populous suburb and the largest city in the central Minnesota region after St...

|
|45°37′15"N 94°12′13"W
|
|
|-
|St. Cloud Dam

St. Cloud Dam

The St. Cloud Dam is a dam across the Mississippi River in St. Cloud, Minnesota, in the United States. The dam is 23.3 feet high and features a three foot flip up gate on its top to raise the water level and dragon's teeth at the bottom which are used to disperse energy...

|St. Cloud, Minnesota

St. Cloud, Minnesota

St. Cloud is a city in the U.S. state of Minnesota and the largest population center in the state's central region. The population was 65,842 at the 2010 census. It is the county seat of Stearns County...

|
|45°32′52"N 94°08′50"W
|
|
|-
|Coon Rapids Dam
|Brooklyn Park

Brooklyn Park, Minnesota

According to the 2010 census, there were 75,781 people residing in the city. The racial makeup of the city was 52% White, 24% African American, 1% Native American, 15% Asian, 42 residents identifying themselves as Pacific Islander, 4% from other races, and 4% from two or more races...

/ Coon Rapids

Coon Rapids, Minnesota

As of the census of 2000, there were 61,627 people, 22,578 households, and 16,572 families residing in the city. The population density was 2,718.1 people per square mile . There were 22,828 housing units at an average density of 1,007.2 per square mile...

, Minnesota

Minnesota

Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

|
|45°08′36"N 93°18′43"W
|
|No locks, ends navigable portion of river
|-
|Upper Saint Anthony Falls

Saint Anthony Falls

Saint Anthony Falls, or the Falls of Saint Anthony, located northeast of downtown Minneapolis, Minnesota, was the only natural major waterfall on the Upper Mississippi River. The natural falls was replaced by a concrete overflow spillway after it partially collapsed in 1869...

Lock and Dam
|Minneapolis, Minnesota

Minneapolis, Minnesota

Minneapolis , nicknamed "City of Lakes" and the "Mill City," is the county seat of Hennepin County, the largest city in the U.S. state of Minnesota, and the 48th largest in the United States...

|~854
|44°58′54"N 93°15′31"W
|799 feet
|Last locks upstream on river
|-
|Lower Saint Anthony Falls

Saint Anthony Falls

Lock and Dam
|Minneapolis, Minnesota

Minneapolis, Minnesota

Minneapolis , nicknamed "City of Lakes" and the "Mill City," is the county seat of Hennepin County, the largest city in the U.S. state of Minnesota, and the 48th largest in the United States...

|~853
|44°58′42"N 93°14′49"W
|750 feet
|
|-
|Meeker Island Lock and Dam

Meeker Island Lock and Dam

The Meeker Island Lock and Dam was the first lock and dam facility built on the Upper Mississippi River. After a construction period lasting eight years, the site was only in operation for five years from 1907 to 1912 when the growing interest in hydroelectric power led to design and construction...

(demolished)
|Minneapolis, Minnesota

Minneapolis, Minnesota

Minneapolis , nicknamed "City of Lakes" and the "Mill City," is the county seat of Hennepin County, the largest city in the U.S. state of Minnesota, and the 48th largest in the United States...

/ St. Paul, Minnesota
|~850
|44°57′14"N 93°12′28"W
|NA
|demolished, originally known as Lock and Dam No. 2
|-
|Lock and Dam No. 1

Lock and Dam No. 1, Mississippi River

Ford Dam, officially known as Lock and Dam No. 1 is on the Upper Mississippi River and is located between Minneapolis and Saint Paul, Minnesota just north of the confluence of the Mississippi with the Minnesota River...

|Minneapolis, Minnesota

Minneapolis, Minnesota

Minneapolis , nicknamed "City of Lakes" and the "Mill City," is the county seat of Hennepin County, the largest city in the U.S. state of Minnesota, and the 48th largest in the United States...

/ St. Paul, Minnesota
|~847.8
|44°54′55"N 93°12′02"W
|725 feet
|Ford Plant Powerhouse on East side
|-
|Lock and Dam No. 2

Lock and Dam No. 2

Lock and Dam No. 2 is located along the Upper Mississippi River near Hastings, Minnesota and was originally built in 1907. The eastern dam portion is 722 feet wide and has 19 tainter gates. A hydroelectric station that produces about 4.4 megawatts is owned by the city of Hastings, while the 110...

|Hastings, Minnesota

Hastings, Minnesota

Hastings is a city in Dakota counties in the U.S. state of Minnesota, near the confluence of the Mississippi and St. Croix Rivers. The population was 22,172 at the 2010 census. It is the county seat of Dakota County. The bulk of Hastings is in Dakota County; only a small part of the city extends...

|~815
|44°45′35"N 92°52′07"W
|687 feet
|
|-
!colspan=6|

Minnesota
Minnesota
Minnesota is a U.S. state located in the Midwestern United States. The twelfth largest state of the U.S., it is the twenty-first most populous, with 5.3 million residents. Minnesota was carved out of the eastern half of the Minnesota Territory and admitted to the Union as the thirty-second state...

- Wisconsin
Wisconsin
Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

|-
|Lock and Dam No. 3

Lock and Dam No. 3

Lock and Dam No. 3 is a lock and dam located near Red Wing, Minnesota on the Upper Mississippi River around river mile 796.9. It was constructed and placed in operation July 1938. The site underwent major rehabilitation from 1988 through 1991. The dam consists of concrete long with 4 roller gates...

|Red Wing, Minnesota

Red Wing, Minnesota

Red Wing is a city in Goodhue County, Minnesota, United States, on the Mississippi River. The population was 16,459 at the 2010 census. It is the county seat of Goodhue County....

|796.9
|44°36′36"N 92°36′37"W
|675 feet
|
|-
|Lock and Dam No. 4

Lock and Dam No. 4

Lock and Dam No. 4 is a lock and dam located near Alma, Wisconsin and Kellogg, Minnesota on the Upper Mississippi River around river mile 752.8. It was constructed and placed in operation in May 1935. Its last major rehabilitation was from 1988 to 1994. The dam consists of a concrete structure ...

|Alma, Wisconsin

Alma, Wisconsin

Alma is a city in and the county seat of Buffalo County in the U.S. state of Wisconsin. The population was 942 at the 2000 census. The city is surrounded by the Town of Alma. The motto for the city of Alma is: "Step into Living History."-Geography:...

|~753
|44°19′32"N 91°55′13"W
|667 feet
|The lock is on the Wisconsin side right next to a small cafe.
|-
|Lock and Dam No. 5

Lock and Dam No. 5

Lock and Dam No. 5 is a lock and dam located between Buffalo County, Wisconsin and Winona County, Minnesota on the Upper Mississippi River around river mile 738.1. It was constructed and placed in operation May 1935. The site underwent major rehabilitation from 1987 through 1998...

|Winona County, Minnesota

Winona County, Minnesota

As of the census of 2000, there were 49,985 people, 18,744 households, and 11,696 families residing in the county. The population density was 80 people per square mile . There were 19,551 housing units at an average density of 31 per square mile...

|~738.1
|44°09′40"N 91°48′39"W
|660 feet
|Visitor parking next to the lock.
|-
|Lock and Dam No. 5A

Lock and Dam No. 5A

Lock and Dam No. 5A is a lock and dam located near Fountain City, Wisconsin and Goodview, Minnesota on the Upper Mississippi River around river mile 728.5. It was constructed in 1932, placed in operation in 1936. Its last major rehabilitation was from 1989 through 2000...

|Goodview, Minnesota

Goodview, Minnesota

As of the census of 2000, there were 3,373 people, 1,375 households, and 966 families residing in the city. The population density was 1,947.2 people per square mile . There were 1,419 housing units at an average density of 819.2 per square mile...

|~728.5
|44°05′18"N 91°40′08"W
|651 feet
|
|-
|Lock and Dam No. 6

Lock and Dam No. 6

Lock and Dam No. 6 is a lock and dam located near Trempealeau, Wisconsin on the Upper Mississippi River near river mile 714.1. It was constructed and placed in operation in June 1936. The last major rehabilitation was from 1989 to 1999. The dam consists of long concrete structure with five roller...

|Trempealeau, Wisconsin

Trempealeau, Wisconsin

Trempealeau is a village in Trempealeau County in the U.S. state of Wisconsin. The population was 1,529 at the 2010 census. The village is located within the Town of Trempealeau.-Geography:Trempealeau is located at ....

|~714.1
|43°59′59"N 91°26′18"W
|646 feet
|
|-
|Lock and Dam No. 7

Lock and Dam No. 7

Lock and Dam No. 7 is a lock and dam located near Onalaska, Wisconsin on the Upper Mississippi River. It forms pool 7 and Lake Onalaska.The facility is located on Mississippi River mile 702.5 near La Crescent, Minnesota...

|La Crescent, Minnesota

La Crescent, Minnesota

As of the census of 2000, there were 4,923 people, 1,940 households, and 1,367 families residing in the city. The population density was 1,634.4 people per square mile . There were 2,014 housing units at an average density of 668.6 per square mile...

|~702.5
|43°52′01"N 91°18′26"W
|639 feet
|
|-
|Lock and Dam No. 8

Lock and Dam No. 8

Lock and Dam No. 8 is a lock and dam located near Genoa, Wisconsin on the Upper Mississippi River near river mile 679.2. It was constructed and put into operation by April 1937. The site underwent major rehabilitation from 1989 through 2003....

|Genoa, Wisconsin

Genoa, Wisconsin

Genoa is a village in Vernon County, Wisconsin, United States. The population was 263 at the 2000 census. The village is within the Town of Genoa. There is also a village named Genoa City, Wisconsin.-Economy:...

Iowa
Iowa
Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...

- Wisconsin
Wisconsin
Wisconsin is a U.S. state located in the north-central United States and is part of the Midwest. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin's capital is...

|-
{| class="wikitable" width="100%"
|-
|Lock and Dam No. 9

Lock and Dam No. 9

Lock and Dam No. 9 is a lock and dam located near Lynxville, Wisconsin and Harpers Ferry, Iowa on the Upper Mississippi River around river mile 647.9. The lower portion of Pool 9 was formally named Lake Winneshiek. The normal pool elevation behind the dam is . It was constructed and placed in...

|Harpers Ferry, Iowa

Harpers Ferry, Iowa

Harpers Ferry is a city in Taylor Township, Allamakee County, Iowa, United States. The population was 330 at the 2000 census.-Geography:Harpers Ferry is located at ....

|~647.9
|43°12′46"N 91°06′15"W
|620 feet
|
|-
|Lock and Dam No. 10

Lock and Dam No. 10

Lock and Dam No. 10 is a lock and dam located in Guttenberg, Iowa on the Upper Mississippi River around river mile 615.0. It was constructed and placed in operation November 1937. The site underwent major rehabilitation 1989—2006. The dam consists of a concrete dam long with four roller gates and...

|Guttenberg, Iowa

Guttenberg, Iowa

-Demographics:As of the census of 2000, there were 1,987 people, 837 households, and 534 families residing in the city. The population density was 962.3 people per square mile . There were 935 housing units at an average density of 452.8 per square mile...

|~615.0
|42°47′06"N 91°05′42"W
|611 feet
|
|-
|Lock and Dam No. 11

Lock and Dam No. 11

General Zebulon Pike Lock and Dam No. 11 is a lock and dam located between Dubuque, Iowa and rural Grant County, Wisconsin, on the Upper Mississippi River. It was opened to navigation 14 September 1937. The movable portion of the dam is long and consists of 13 tainter gates and three roller gates...

|Dubuque, Iowa

Dubuque, Iowa

Dubuque is a city in and the county seat of Dubuque County, Iowa, United States, located along the Mississippi River. In 2010 its population was 57,637, making it the ninth-largest city in the state and the county's population was 93,653....

|~583
|42°32′25"N 90°38′39"W
|603 feet
|
|-
!colspan=6|

Iowa
Iowa
Iowa is a state located in the Midwestern United States, an area often referred to as the "American Heartland". It derives its name from the Ioway people, one of the many American Indian tribes that occupied the state at the time of European exploration. Iowa was a part of the French colony of New...

- Illinois
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

|-
|Lock and Dam No. 12

Lock and Dam No. 12

Lock and Dam No. 12 is a lock and dam located on the Upper Mississippi River at Bellevue, Iowa, United States. The movable portion of the dam starts at the locks adjacent to the Iowa shore and is long, consisting of seven tainter gates and three roller gates...

|Bellevue, Iowa

Bellevue, Iowa

Bellevue is a city in Jackson County, Iowa, United States. The population was 2,350 at the 2000 census. The city lies along the Mississippi River , next to Bellevue State Park....

|~556.7
|42°15′41"N 90°25′12"W
|592 feet
|
|-
|Lock and Dam No. 13

Lock and Dam No. 13

Lock and Dam No. 13 is a lock and dam located on the Upper Mississippi River above Fulton, Illinois and Clinton, Iowa. This facility offers visitors a view of the barges and boats locking through on the widest pool in the Upper Mississippi River....

|Clinton, Iowa

Clinton, Iowa

Clinton is a city in and the county seat of Clinton County, Iowa, United States. The population was 26231as of 2010. Clinton, along with DeWitt, Iowa , was named in honor of the seventh governor of New York, DeWitt Clinton. Clinton is the principal city of the Clinton Micropolitan Statistical...

|~522.5
|41°53′53"N 90°09′21"W
|583 feet
|
|-
|Lock and Dam No. 14

Lock and Dam No. 14

Lock and Dam No. 14 is a lock and dam located near LeClaire, Iowa on the Upper Mississippi River above Davenport, Iowa and Moline, Illinois. The movable portion of the dam is long and consists of 13 tainter gates and 4 roller gates. Connected to it is a long non-submersible rock fill dike which...

|LeClaire, Iowa
|~493.2
|41°34′24"N 90°23′56"W
|572 feet
|
|-
|Lock and Dam No. 15

Lock and Dam No. 15

Lock and Dam No. 15 is a lock and dam located on the Upper Mississippi River. It spans the river between Rock Island, Illinois and Davenport, Iowa. Lock and Dam 15 is the largest roller dam in the world, its dam is long and consists of nine non-submersible, non-overflow roller gates and two ...

|Rock Island, Illinois

Rock Island, Illinois

Rock Island is the county seat of Rock Island County, Illinois, United States. The population was 40,884 at the 2010 census. Located on the Mississippi River, it is one of the Quad Cities, along with neighboring Moline, East Moline, and the Iowa cities of Davenport and Bettendorf. The Quad Cities...

|~482.8
|41°31′07"N 90°34′08"W
|561 feet
|
|-
|Lock and Dam No. 16

Lock and Dam No. 16

Lock and Dam No. 16 is a lock and dam located near Muscatine, Iowa on the Upper Mississippi River around river mile 457.2. The movable portion of the dam is long and consists of 4 roller gates and 15 Tainter gates. The lock is wide by long. In 2004, the facility was listed in the National...

|Muscatine, Iowa

Muscatine, Iowa

Muscatine is a city in Muscatine County, Iowa, United States. The population was 22,886 in the 2010 census, an increase from 22,697 in the 2000 census. It is the county seat of Muscatine County...

|~457.2
|41°25′32"N 91°0′35"W
|545 feet
|
|-
|Lock and Dam No. 17

Lock and Dam No. 17

Lock and Dam No. 17 is a lock and dam located near New Boston, Illinois on the Upper Mississippi River near river mile 437. Its main lock is wide and long with its bottom at an elevation of . Normal pool elevation behind the dam is . The movable portion of the dam is long and consists of 3...

|New Boston, Illinois

New Boston, Illinois

New Boston is a city in Mercer County, Illinois, United States. The population was 632 at the 2000 census.-Geography:New Boston is located at ....

|~437
|41°11′27"N 91°03′37"W
|536 feet
|
|-
|Lock and Dam No. 18

Lock and Dam No. 18

Lock and Dam No. 18 is a lock and dam located near Gladstone, Illinois and Burlington, Iowa on the Upper Mississippi River around river mile 410.5. The movable dam is and consists of 3 roller gates and 14 tainter gates. The lock is wide by long. In 2004, the facility was listed in the National...

|Gladstone, Illinois

Gladstone, Illinois

Gladstone is a village in Henderson County, Illinois, United States. The population was 284 at the 2000 census. It is part of the Burlington, IA–IL Micropolitan Statistical Area.-Geography:Gladstone is located at ....

|~410.5
|40°52′54"N 91°01′27"W
|528 feet
|
|-
|Lock and Dam No. 19

Lock and Dam No. 19

Lock and Dam No. 19 is a lock and dam located on the Upper Mississippi River near Keokuk, Iowa. In 2004, the facility was listed in the National Register of Historic Places as Lock and Dam No. 19 Historic District, #04000179 covering , 7 buildings, 12 structures, 1 object. The lock is owned and...

|Keokuk, Iowa

Keokuk, Iowa

Keokuk is a city in the southeastern part of the U.S. state of Iowa and one of the county seats of Lee County. The other county seat is Fort Madison. The population was 11,427 at the 2000 census. The city is named after the Sauk Chief Keokuk, who is thought to be buried in Rand Park...

|~364
|40°23′41"N 91°22′29"W
|518 feet
|
|-
!colspan=6|

Missouri
Missouri
Missouri is a US state located in the Midwestern United States, bordered by Iowa, Illinois, Kentucky, Tennessee, Arkansas, Oklahoma, Kansas and Nebraska. With a 2010 population of 5,988,927, Missouri is the 18th most populous state in the nation and the fifth most populous in the Midwest. It...

- Illinois
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

|-
|Lock and Dam No. 20

Lock and Dam No. 20

Lock and Dam No. 20 is a lock and dam located on the Upper Mississippi River, about one mile upstream from Canton, Missouri.The structure is located at river mile 343.1. It includes a long dam, 40 tainter gates, 3 roller gates, and a lock chamber that is wide by long. There is also an incomplete...

|Canton, Missouri

Canton, Missouri

Canton is a city in Lewis County, Missouri, United States. The population was 2,557 at the 2000 census. Canton is the site of Culver-Stockton College, a small liberal arts college affiliated with the Christian Church...

|~343
|40°08′37"N 91°30′46"W
|480 feet
|
|-
|Lock and Dam No. 21

Lock and Dam No. 21

Lock and Dam No. 21 is a lock and dam located at Quincy, Illinois on the Upper Mississippi River around river mile 324.9. The movable portion of the dam is long and consists of three roller gates and ten tainter gates. A long submersible dike continues to the Missouri shore. The main lock is ...

|Quincy, Illinois

Quincy, Illinois

Quincy, known as Illinois' "Gem City," is a river city along the Mississippi River and the county seat of Adams County. As of the 2010 census the city held a population of 40,633. The city anchors its own micropolitan area and is the economic and regional hub of West-central Illinois, catering a...

|~324.9
|39°54′23"N 91°25′56"W
|470 feet
|
|-
|Lock and Dam No. 22

Lock and Dam No. 22

Lock and Dam No. 22 is a lock and dam located near Saverton, Missouri on the Upper Mississippi River around river mile 301.2. The movable portion of the dam is long and consists of three roller gates and ten tainter gates. A long submersible earthen dike extends to a flood control levee on the...

|Saverton, Missouri

Saverton, Missouri

Saverton is an unincorporated community in eastern Ralls County, Missouri, United States. It is located on the Mississippi River about ten miles southeast of Hannibal. The community was founded in 1819 and is named for the Saverton family....

|~301.2
|39°38′18"N 91°14′49"W
|460 feet
|
|-
|Lock and Dam No. 24

Lock and Dam No. 24

Lock and Dam No. 24 is a lock and dam located near Clarksville, Missouri around river mile 273.4 on the Upper Mississippi River. The main lock is wide and long with its bottom at an elevation of 430 feet. The auxiliary lock is not operational. Normal pool elevation behind the dam is 449 feet...

|Clarksville, Missouri

Clarksville, Missouri

Clarksville is a city in Pike County, Missouri, United States. The population was 490 at the 2000 census.-Geography:...

|~273.4
|39°22′36"N 90°54′30"W
|449 feet
|
|-
|Lock and Dam No. 25

Lock and Dam No. 25

Lock and Dam No. 25 is a lock and dam located near Winfield, Missouri on the Upper Mississippi River around river mile 241.4. The movable portion of the dam is long and consists of three roller gates and 14 tainter gates. A submersible dike extends to the Illinois shore. A long dike is part of...

|Winfield, Missouri

Winfield, Missouri

Winfield is a city in Lincoln County, Missouri, United States. The population was 723 at the 2000 census.-Geography:Winfield is located at .According to the United States Census Bureau, the city has a total area of , all of it land....

|~241.4
|39°00′17"N 90°41′11"W
|434 feet
|
|-
|Lock and Dam No. 26 (historical)

Lock and Dam No. 26 (historical)

Lock and Dam No. 26 was a lock and dam located near Alton, Illinois on the Upper Mississippi River around river mile 202.5.Opened in 1938, its largest lock was 600 feet long...

|Alton, Illinois

Alton, Illinois

Alton is a city on the Mississippi River in Madison County, Illinois, United States, about north of St. Louis, Missouri. The population was 27,865 at the 2010 census. It is a part of the Metro-East region of the Greater St. Louis metropolitan area in Southern Illinois...

|~202.5
|38°53′10"N 90°10′55"W
|419 feet
|Demolished
|-
|Melvin Price Locks and Dam

Melvin Price Locks and Dam

Melvin Price Locks and Dam is a dam and two locks at river mile 200.78 on the Upper Mississippi River, about north of Saint Louis, Missouri. The collocated National Great Rivers Museum, at 1 Lock and Dam Way, East Alton, Illinois, explains the structure and its engineering.Construction began in...

aka Lock and Dam No. 26
|East Alton, Illinois

East Alton, Illinois

East Alton is a village in Madison County, Illinois, United States. The population was 6,830 at the 2000 census.-Geography:East Alton is located at ....

|~200.8
|38°52′09"N 90°09′13"W
|
|
|-
|Chain of Rocks Dam
aka Dam No. 27
|Glasgow Village, Missouri

Glasgow Village, Missouri

Glasgow Village is a census-designated place in St. Louis County, Missouri, United States. The population was 5,429 at the 2010 census.-Geography:Glasgow Village is located at ....

|~190.2
|38°45′27"N 90°10′39"W
|398 feet
|
|-
|Chain of Rocks Lock

Chain of Rocks Lock

Chain of Rocks Lock, also known as Locks #27, is a lock situated on the southern end of Chouteau Island near St. Louis, Missouri on the Upper Mississippi River...

aka Lock No. 27
|Granite City, Illinois

Granite City, Illinois

Granite City is a city in Madison County, Illinois, United States, part of the Greater St. Louis metropolitan area. At the 2010 census, the population was 29,849, making it the third largest city in the Metro-East and Southern Illinois, behind Alton and Belleville...

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|38°42′11"N 90°10′51"W
|
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|}

External links

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Locks and Dams

See also

External links