Hiram W. Wadsworth (1862-1939) is known as the father of Metropolitan Water District of Southern California. As the mayor of Pasadena, he called for a regional partnership of municipalities to bring water to Southern California. After initiating the Colorado River Aqueduct Association and being elected its president, he directed the campaign from 1924-1929 that led to the establishment of the district. The pumping plant at Diamond Valley Lake, located 90 miles southeast of Los Angeles in Riverside County, was named the Hiram W. Wadsworth Pumping/Hydro-generating Facility in his honor.

For more information, view the MWD Hiram W. Wadsworth Pumping/Hydro-generating Facility info sheet.