US Army Corps of Engineers
Great Lakes and Ohio River Division

The 2018 National Inventory of Dams (NID) is now available! All charts, queries and maps reflect the most current NID database. The NID was populated using the 116th Congressional District information. State and federal dam regulators provided their data from May to November 2018 for inclusion in the 2018 database.
Questions about permits? Find your Regulatory Office by visiting the USACE Regulatory Boundaries Map and typing in your address or zip code.
The Great Lakes Navigation System and its connectivity is vitally important to the Nation's economy. The Soo Locks remain the critical connection between raw materials and manufacturing for the nation. The Detroit District of the U.S. Army Corps of Engineers is proud to operate and maintain the Soo Locks in service to our nation.
The U.S. Army Corps of Engineers is the nation’s leading provider of outdoor recreation with over 400 lake and river projects in 43 states and more than 360 million visits per year. Please be careful in and around the water because even strong swimmers drown. Check out this website to find valuable tips and resources that could save your life or the life of someone you care about.

LRD Latest News

Sections of bio acoustic fish fence submerged at Barkley Lock
GRAND RIVERS, Ky. (Oct. 9, 2019) – Crews are submerging and installing sections of a bio acoustic fish fence on the downstream side of Barkley Lock this week as part of an experiment to deter the...
Stonewall Jackson Lake Seeks Public Input on Master Plan Update
The Pittsburgh District is revisiting the Stonewall Jackson Lake master plan and is seeking feedback on the proposed changes to the management of the lake, resulting from public input. ...
Corps employee honored as Technology All Star at Women of Color STEM Conference
NASHVILLE, Tenn. (Oct. 8, 2019) – U.S. Army Corps of Engineers, Nashville District, Business Integration Office Chief Danita Jones received the Technology All-Star award for managerial leadership...
Employee Spotlight: Chuck Gould
Chuck Gould, lead program analyst, U.S. Army Corps of Engineers, Detroit District, recently served four and a half months at the U.S. Army Corps of Engineers Headquarters office in a developmental...
Kentucky Lock operator cited for preventing $5 million of potential damages
NASHVILLE, Tenn. (Oct. 6, 2019) – A lock operator at Kentucky Lock received the U.S. Army Meritorious Civilian Service Medal this week from the commanding general of the U.S. Army Corps of Engineers...


LRD Commander promoted to Major General
Brig. Gen. Toy speaks to a West Point class about leadership.
Brig. Gen. Toy speaking at the Inland Waterways Conference in Cincinnati, OH on March 7, 2017
Brig. Gen. Toy speaks at West Point.
Brig. Gen. Mark Toy, LRD Commander, visits Olmsted Lock and Dam for the first time since taking command in August 2016.
Brig. Gen. Mark Toy receives a briefing on Olmsted Lock and Dam.
Brig. Gen. Toy receives a briefing on Lock and Dam 52.
Brig. Gen. Mark Toy receives a briefing at Olmsted Lock and Dam.
Brig. Gen. Toy visits Olmsted Locks and Dam
Brig. Gen. Toy visits Cincinnati Museum Center
The Great Lakes and Ohio River Division is partnering with the Cincinnati Museum Center to tell the Army Corps of Engineers' story as it relates to the history of the Ohio River and the city of Cincinnati, Ohio.