How did the U.S. Army Corps of Engineers contribute to flood control and navigation projects?

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The U.S. Army Corps of Engineers plays a dual role as both a combatant arm of the United States Army and a technical service responsible for extensive civil works.

Regarding navigation and flood control, the Corps’ civil activities have historically centered on the planning, construction, and maintenance of improvements to rivers, harbors, and other waterways, alongside comprehensive flood control initiatives.1

These efforts are managed through an extensive field organization, where projects are typically executed by private industry under the supervision of engineer officers. In addition to these primary missions, the Corps has evolved to prioritize environmental sustainability and ecosystem restoration in coastal and inland regions. Furthermore, the organization serves as a major provider of hydroelectric power in the United States, operating numerous plants that contribute significantly to the nation's total hydropower output.1