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Navigation Mission

Navigation is travel or transportation over water. Many different kinds of boats and vessels are used on rivers to move people and products from one place to another.

Navigation was extremely important for foreign and domestic trade and travel in the early days of our country before cars, trucks, trains and airplanes were invented. In those days, rivers were used as "roads" to connect inland settlements to river and coastal ports. Communities established at these ports became important economic, cultural and social hubs in the development of our nation.

Today, navigable inland waterways provide a cost-effective, fuel efficient means for moving major bulk commodities, such as grain, coal and petroleum. Inland navigation is a key element of state and local government economic development and job-creation efforts, and is essential in maintaining economic competitiveness and national security. For more information, view our brochure Inland Waterway Navigation Value to the Nation (PDF).

Navigation activities in the United States take place at thousands of ports and terminals along more than 25,000 miles of waterways. The U.S. Army Corps of Engineers is responsible for facilitating safe, reliable and economically efficient movement of vessels, and it does so by constructing and maintaining navigation channels and harbors, and regulating water levels on inland waterways.
Navigation Channel
Sedimentation in the channel is caused by the normal cycle of silt movement, erosion from high water or heavy rains and changes in river currents. To maintain the 9-foot navigation channel, material that settles in the channel area must be removed. Mechanical or hydraulic dredging are methods for the removal of that material. This material is placed in designated areas along the river. Some of these areas are beneficial use placement areas.

Beneficial use of dredged material is the productive use of the material by the public or private sectors. Examples of common beneficial uses of dredged material in the St. Paul District are upland habitat development, wetland creation, aquatic habitat enhancement, creation of areas for bird nesting, beach nourishment, winter road maintenance, levee repair and improvement, aggregate for concrete, lining fly ash pits, bank protection and general purpose fill. The district is responsible for maintaining 243.6 miles of navigation channel to a depth of at least 9 feet on the Mississippi River from Minneapolis at river mile 857.6 to Guttenberg, Iowa, at river mile 614.0, and 40.6 miles on three tributaries: the Minnesota, St. Croix and Black rivers.

The Corps of Engineers maintains navigation channels, much like road crews maintain highways, and builds breakwaters or jetties to protect public property from shoreline erosion. A 9-foot navigation channel is maintained on the Upper Mississippi River, so river vessels can transport their goods north of St. Louis.

To achieve a 9-foot channel in the Upper Mississippi River, the construction of a system of navigation locks and dams was authorized in 1930. Dams are built on rivers to hold back water and form deeper navigation "pools." Most pools in the United States are maintained at a constant minimum water depth of 9 feet for safe navigation.

Dams make it necessary for river vessels to use a series of locks to "step" up or down the river from one water level to another. Additional benefits from the locks and dams include adding river recreational areas for public use, providing water supply for several river communities and serving as nesting grounds for migratory birds. The St. Paul District has jurisdiction over the 13 uppermost structures, from No. 10 at Guttenberg, Iowa, to Upper St. Anthony Falls Lock and Dam in Minneapolis, as well as 1,300 wing dams and 200 revetments.


The St. Paul District provides daily updates for water levels and flows at various points on the St. Croix, Minnesota and Upper Mississippi rivers on its River Information Line, 651-290-5861.

Advantages of Inland
Waterways Transportation

Navigation News


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Corps seeks comments on Lock and Dam 7 weir construction

ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, is seeking public comments on plans to construct a weir upstream from the auxiliary chamber at Lock and Dam 7, near La Crosse, Wisconsin. [Read More]
Published: May-23-18

Corps of Engineers reopens two Minneapolis locks to recreational traffic

ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, reopened its locks at Lower St. Anthony Falls Lock and Dam and Lock and Dam 1, both in Minneapolis, today to recreational traffic. [Read More]
Published: May-03-18

High flows force closure of Minneapolis locks for recreational traffic

The U.S. Army Corps of Engineers, St. Paul District, has closed its locks at Lower St. Anthony Falls and Lock and Dam 1, both in Minneapolis, to recreational traffic today due to high flows. [Read More]
Published: Apr-24-18
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Dredging Notices

Dredge Notice 18-01 Reads Landing


NOTICE DATE: May 22nd, 2018
Proposed Dredging Date: May 23rd, 2018
DREDGE CUT NAME: Reads Landing
RIVER MILE: 762.3 - 762.7
POOL: 4
Published: 5/22/2018

Dredge Notice 17-46 Indian Camp Light


NOTICE DATE: November 2nd, 2017
Proposed Dredging Date: November 6th, 2017
DREDGE CUT NAME: Indian Camp Light
RIVER MILE: 665.6 - 665.8
POOL: 9
Published: 11/2/2017

Dredge Notice 17-45 Lansing Upper Light


NOTICE DATE: October 24th, 2017
Proposed Dredging Date: October 24th, 2017
DREDGE CUT NAME: Lansing Upper Light
RIVER MILE: 664.1 - 664.7
POOL: 9
Published: 10/24/2017

Dredge Notice 17-44 McMillan Island


NOTICE DATE: October 11th, 2017
Proposed Dredging Date: October 12th, 2017
DREDGE CUT NAME: McMillan Island
RIVER MILE: 618.7 - 619.0
POOL: 10
Published: 10/11/2017

Contact

Corps of Engineers, St. Paul District
Channels & Harbors Project Office
Fountain City, WI
Office: 651-290-5150
mvp.stpaul.channel@usace.army.mil

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