Availability of ground water for irrigation, municipal, or industrial use in the Navajo and Hopi Indian Reservations, Arizona, New Mexico, and Utah

The Navajo and Hopi Indian reservations are located mainly in northeastern Arizona, although the Navajo Indian reservation extends into northwestern New Mexico and southeastern Utah (see location map). The area of this report coincides with the areas of the Navajo and Hopi Indian reservations except in part of New Mexico, where the areas was extended eastward to longitude 108° and southward to Interstate Highway 40 and in southeastern Utah.

This investigation was conducted by the U.S. Geological Survey at the request of the Bureau of Indian Affairs. The study was undertaken to evaluate the potential for large-scale ground-water development in the Navajo and Hope Indian Reservations. The results given in this report are intended as preliminary guidelines for the development of ground water in sufficient quantity and of suitable quality for irrigation, municipal, and industrial uses. Data are not included for areas in which less than 25 gal min^-1 (gallons per minute) or 95 l min^-1 (litres per minute) can be developed.