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The U.S. Army Corps of Engineers is introducing its new Regulatory Request System, an online application portal that allows the public to submit permit applications and other information when requesting permission to dredge, fill or conduct activities in jurisdictional wetlands and waters of the U.S. RRS is available at https://rrs.usace.army.mil/rrs.
Lock and Dam 25 is located in Calhoun County, Illinois, and Lincoln County, Missouri, at approximately Mile 241.4 on the Upper Mississippi River above the mouth of the Ohio River near Winfield, Missouri.
Engineers Far From Ordinary: The U.S. Army Corps of Engineers in St. Louis takes a look at the story of the St. Louis District beginning with the rich and legendary history of the river as well as the modern history of the District’s innovations in response to the challenges of simultaneously maintaining and regulating navigation, protecting again flooding, and protecting the environment.
America the Beautiful National Parks and Federal Recreational Lands Interagency Passes are available for purchase at St. Louis District Lake Offices and Visitor Centers.

Latest News Releases

Corps of Engineers to host meeting on Lock 25 expansion with area residents and community members
10/9/2024
The U.S. Army Corps of Engineers, St. Louis District, will host a meeting to provide additional information on the new 1,200-foot lock at Lock and Dam 25. The meeting will be held at Winfield City...
Autumn Activities Await Visitors of Carlyle Lake
9/30/2024
This October, Carlyle Lake will come alive with vibrant fall colors and a variety of family-friendly events hosted by various local organizations in cooperation with the U.S. Army Corps of Engineers...
District celebrates island restoration completion
9/26/2024
ST. LOUIS – The U.S. Army Corps of Engineers, St. Louis District, celebrated the completion of three Navigation and Ecosystem Sustainability Program, or NESP, projects on the Illinois River yesterday,...
Rend Lake Dam Road Temporarily Closing for Roadwork September 30 – November 3, 2024
9/24/2024
The Rend Lake Dam Road will be closed to through traffic from September 30 through November 3, 2024 for major roadwork and necessary concrete repairs on the Spillway Bridge. Starting at 8:00am...
Army Corps of Engineers waives fees and invites volunteers to participate in National Public Lands Day, Sept. 28
9/19/2024
The U.S. Army Corps of Engineers announced today that it will waive day use fees normally charged at boat launch ramps and swimming beaches at its recreation areas nationwide in recognition of...

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Did you know...

The St. Louis District is responsible for maintaining a navigation channel nine feet deep and 300 feet wide on 300 miles of the Mississippi River from Saverton, Missouri, to Cairo, Illinois. We are also responsible for maintaining a navigation channel on the lower 80 miles of the Illinois River as well as the lower 36 miles of the Kaskaskia River. Strategically situated at the crossroads of three major river systems, the St. Louis District is also located at the critical transition point on the Mississippi River where it is a “locking river” north of St. Louis and the “open river” from St. Louis on south.