'The Great Cataract' - Effects of late Holocene debris flows on Lava Falls Rapid, Grand Canyon National Park and Hualapai Indian Reservation, Arizona

Webb, R.H., Melis, T.S., Wise, T.W., and Elliott, J.G., 1996, 'The Great Cataract' - Effects of late Holocene debris flows on Lava Falls Rapid, Grand Canyon National Park and Hualapai Indian Reservation, Arizona: U.S. Geological Survey Open-File Report 96-0460, 96 p., 4 appendices, 1 sheet, scale 1:1,000.