The project is the routine maintenance, including painting and repair of the dam gates. Phase 1 consisted of report development, including alternatives and life cycle costs. Phase 2 of the project analyzed the alternatives, and decided upon an Indefinite Delivery – Indefinite Quantity (IDIQ) acquisition strategy with maintenance performed on site.
Determine whether or not continued operation and ownership of Lower St. Anthony Falls Lock and Dam and Lock and Dam 1 are in the federal interest, and if not, provides supporting information for deauthorization of the project purposes and disposal of the property.
Determine whether or not continued operation and ownership of Upper St. Anthony Falls Lock and Dam (USAF) is in the federal interest, and if not, provide supporting information for deauthorization of the project purposes and disposal of the property. USAF is located on the Mississippi River in Minneapolis, Minnesota.
The Fountain City Service Base (FCSB) Sustainment and Modernization Project is a two-phase project to improve the function and safety throughout the service base. The two objectives of the project are to replace the deteriorated mooring dolphins on the west side of the Fountain City harbor channel and modernize the service base. The project is located at the Fountain City Services Base in Pool 5 of the Upper Mississippi River, in Fountain City, Wisconsin.
The Lower Pool 4 DMMP study area is located between Lock and Dam 4 and the foot of Lake Pepin, river miles 753.0 to 764.0. The study area includes the Minnesota communities in Wabasha County of Lake City, Wabasha, Reads Landing and Kellogg and the Wisconsin communities in Buffalo and Pepin Counties of Nelson, Alma and Buffalo City.
The purpose of this project is to extend the longevity of the guidewalls at each of our locks and dams and to reduce operability issues and required maintenance. An end cell would provide adequate protection of the end monolith along the guidewalls, while the past crib grouting component will add stability. Lock and Dams 2 through 10, which are located from Hastings, Minnesota, to Guttenberg, Iowa.
Embankment rehabilitation will address restoring embankments to meet current design standards. Overtopping protection adjacent to concrete structures is the first priority for design and construction. No increase in the height of the embankments is planned. Upper Mississippi Locks and Dams 2 through 10.
Locks and Dams (LD) 2 through 10 have used the same miter gates since their construction in the 1930s. Over time, the gates have been damaged and distressed, which has led to serviceability and safety issues. This project will replace the gates and the anchorages system, increasing navigational longevity and operational readiness while decreasing repair costs and downtime due to maintenance or failure. Upper Mississippi Locks and Dams 2 through 10.
The non-structural embankment repair projects at Locks and Dams (LD) 2 through 10 will address restoring embankments to meet current design standards. Most dam embankments are currently protected from the erosive forces of water by a layer of riprap placed along the embankment’s length. When the riprap eventually erodes, the embankment itself will erode if more protection is not added. Upper Mississippi Locks and Dams 2 through 10.
The tow rail system is integral to the operation of each of the Mississippi River Locks and Dams 2 through 10. It is attached to the top of the lock guidewall and helps guide tows through the lock chamber. Each system is comprised of an operating unit, rail and traveling kevel or “mule.” The Locks and Dams 2 through 10 tow rail systems have been deteriorating over the past several years, requiring rehabilitation of these systems.
Locks and Dams 3 through 10 have auxiliary chambers. Each auxiliary chamber has only a single set of miter gates that could pass shallow draft navigation traffic if the lock chamber was out of operation and the upstream and downstream pools were equalized. At each site, the U.S. Army Corps of Engineers only installed one set of miter gates. An auxiliary lock chamber was never authorized by Congress, which would have included a second set of miter gates. Since installation, the auxiliary emergency gates have never been used, and the gate operating machinery was never installed.
The Navigation and Ecosystem Sustainability Program (NESP), seeks to provide a safe, reliable, cost effective and environment sustainable waterborne navigation system by implementing switchboats at five locks, constructing mooring cells and seven new 1,200 foot locks. NESP will restore the aquatic and terrestrial habitat to a more natural condition on more than 100,000 acres throughout the system through a wide variety of ecosystem projects.
The purpose of the Dredged Material Management Plan (DMMP) is to prepare a coordinated long-term plan for managing dredged material in Pool 2. This plan was initiated due to increases in dredging volumes throughout Pool 2. Furthermore, three temporary dredged material placement sites need to be excavated in Lower Pool 2.
The purpose of the Dredged Material Management Plan (DMMP) is to prepare a coordinated long-term plan for managing dredged material from Pool 6. The Pool 6 DMMP study area is located between Lock and Dam 5A at river mile 728.5 and Lock and Dam 6 at river mile 714.1. The study area borders the city of Winona, Minnesota, at the upstream end and extends downstream of the village of Trempealeau, Wisconsin.
The purpose of the DMMP is to prepare a coordinated long-term plan for managing dredged material in Pool 9. This plan was initiated due to needs for dredged material management upland placement sites, especially in the upstream reach of the pool. The Pool 9 Dredged Material Management Plan (DMMP) study area is located between Lock and Dam 8 at Genoa, Wisconsin, and Lock and Dam 9 near Lynxville, Wisconsin, spanning more than 31 river miles from 679.2 to 648.0. The study area includes several communities near the main navigation channel including Lansing, Iowa, and De Soto, Wisconsin.
Section 14 of the Rivers and Harbors Act of 1899 authorizes the Secretary of the Army to grant permission for alterations to existing U.S. Army Corps of Engineers projects under certain circumstances. The authority is codified in 33 U.S.C. Section 408. Authority to approve alterations has been delegated to the district commander in most cases, although certain alterations require approval from the director of Civil Works at the Corps’ Headquarters (HQUSACE). The Corps may grant permission for the alteration or permanent occupation or use of any of its public works when, in the Corps’ judgment, the occupation or use will not be injurious to the public interest and will not impair the usefulness of the federal works.
The St. Paul Small-Boat Harbor is on the lower end of Harriet Island in St. Paul, Minnesota, at Upper Mississippi River mile 839.6 on the right descending bank. The length of the harbor is 2,375 feet; the width varies from 200 to 400 feet. The Corps of Engineers is authorized to maintain the harbor to a depth of 5.0 feet below low control pool elevation of 687.2 feet mean sea level (msl). The city of St. Paul is the non-federal sponsor for the project and is required to furnish a suitable placement site for the dredged material.
Navigation and Ecosystem Sustainability Program (NESP) is a long-term program of ecosystem restoration and navigation improvements for the Upper Mississippi River System (UMRS). NESP will improve system capacity and reduce commercial traffic delays through construction of seven new 1,200-foot locks, mooring cells, and switchboat implementation.
The U.S. Army Corps of Engineers, St. Paul District is responsible for maintaining 244 miles of the Upper Mississippi River 9-foot channel navigation system from Minneapolis, Minnesota, to Guttenberg, Iowa. The Upper Mississippi River 9-Foot Channel Navigation Project is located in or contiguous to Minnesota, Wisconsin, and Iowa. The navigation project within the St. Paul District includes 13 locks and dams that are operated and maintained by the Corps. In addition to the locks and dams, the project includes channel maintenance, recreation and natural resource activities.
The U.S. Army Corps of Engineers is responsible for maintaining a 9-foot navigation channel as an important component to the inland navigation system. The St. Paul District (MVP) is responsible for maintaining 244 miles of the Upper Mississippi River 9-Foot Channel Navigation Project from the head of navigation at Minneapolis, Minnesota, to Guttenberg, Iowa. The navigation project also includes the lower navigable portions of the Minnesota, St. Croix, and Black Rivers.