The Reclamation Act (also known as the Lowlands Reclamation Act or National Reclamation Act) of 1902 is a United States federal law that funded irrigation projects for the arid lands of 17 states in the American West.

The act at first covered only 16 of the western states, as delineated by the 100th meridian, as Texas had no federal lands. Texas was added later by a special act passed in 1906. The act set aside money from sales