Save the Date - Lock and Dam Open Houses
Save the Date - Lock and Dam Open Houses
America 250
We're celebrating 250 years of the United States of America.
Don't litter, recreate responsibly!
Please recreate responsibly and don't litter at our parks. Make sure you always pick up your trash.
Mark your calendar for our 2026 fee-free dates!
USACE offers fee-free days throughout the year to mark days of celebration and commemoration.
The U.S. Army Corps of Engineers celebrated 250 years in 2025
The U.S. Army Corps of Engineers celebrated 250 years in 2025.

Latest News

Corps of Engineers announces temporary closures at Lock and Dam 9
The U.S. Army Corps of Engineers, St. Paul District, is temporarily closing Lock and Dam 9, in Lynxville, Wisconsin, July 14, 16, 21 and 23, to replace all four main lock chamber miter gates. The lock will be closed to all river traffic, commercial and recreational, from 7 a.m.- 7 p.m.
Published: 7/1/2026
Corps of Engineers temporarily closes West Newton Chute boat landing
ST. PAUL, Minn. – The U.S. Army Corps of Engineers, St. Paul District, will close the West Newton Chute boat landing on the Mississippi River near Kellogg, Minnesota, around July 6.
Published: 6/30/2026
Corps of Engineers opens Lock and Dam 4 for an open house
The U.S. Army Corps of Engineers, St. Paul District, is hosting an open house at its Mississippi River Lock and Dam 4 in Alma, Wisconsin, on July 25.
Published: 6/30/2026