MEMPHIS, Tenn. (AP) — Higher-capacity ports, expanded locks and dams and other infrastructure improvements are needed in the Mississippi River Watershed to allow its waterways to handle shipping demands caused by higher agriculture, oil and natural gas production and manage climate change effects, a U.S. Army Corps of Engineers official said Tuesday.

Brig. Gen. Peter A. DeLuca, commander of the corps’ Mississippi Valley Division, spoke Tuesday at a public meeting held on a corps vessel on the Mississippi River in Memphis. He called on federal, state and local governments — plus citizens groups, businesses and private entrepreneurs — to invest in updating existing infrastructure, and starting new projects.