(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.(Trent Nelson | The Salt Lake Tribune) Las Vegas Wash, a 12-mile-long channel that feeds treated water to Lake Mead, on Thursday, Sept. 29, 2022.