In 1926, the Kokee Ditch was completed diverting water from Mohihi Stream and the headwater of the Waimea River in the Alaka'i Swamp at an altitude of about 3400 feet. About one-fourth of the Kokee Ditch supply has irrigated the highland cane fields below Pu'u Opae reservoir on Niu Ridge. The balance irrigated the highland fields east of Koke'e Road. With the draining of the Nohili and Kawaiele Marshes in 1922 and the continued expansion of sugarcane area, another period of well development took place in the 1920s and 1930s. Initially, this consisted of batteries of closely spaced drilled wells, but Maui-type shafts (tunnels that skim fresh water off the top of the basal aquifer) located along the foot of the bluffs subsequently replaced these. It was Faye's vision that created the Kekaha Ditch and Kokee Ditch systems and the intricate drainage canals that drained the large swamps of Mana.