The
Los Angeles Aqueduct system, comprising the
Los Angeles Aqueduct (
Owens Valley aqueduct) and the
Second Los Angeles Aqueduct, is a water conveyance system, built and operated by the
Los Angeles Department of Water and Power. The Owens Valley aqueduct was designed and built by the city's water department, at the time named The Bureau of Los Angeles Aqueduct, under the supervision of the department's Chief Engineer
William Mulholland. The system delivers water from the
Owens River in the Eastern Sierra Nevada Mountains to
Los Angeles,
California. In 1971 it was recognized by the American Society of Civil Engineers on the
List of Historic Civil Engineering Landmarks.