North America’s longest river, rising in the Rocky Mountains and flowing 2,341 miles to the Mississippi
The Lewis & Clark Regional Water System and related projects are expanding water capacity along the Missouri River. The base system now delivers 44 million gallons daily to 20 communities, with two expansions under way and a separate pipeline project to support growth in the Black Hills region. Together, the initiatives could cost tens of billions and serve hundreds of thousands more residents over the next 40–50 years.