This publication presents a tabulation of the temperature and associated data of subsurface rocks and two maps showing the location of wells for which temperature information is available in the files of the Oil and Gas Conservation Commission. Most of this information consists of the bottom hole temperatures measured by geophysical log surveys of wells drilled for oil, natural gas, and helium in the northeastern portion of the Colorado Plateau tectonic province of Arizona. It represents the first phase of a subsurface temperature project designed primarily for the use of earth scientists interested in the geothermal-energy potential of the state. The second phase of the project will present surface water temperature and associated data of numerous wells drilled for irrigation and other purposes located mostly in the Basin and Range tectonic province of Arizona.

This Brochure is a cooperative effort of the Arizona Development Board, the Oil and Gas Association of Arizona, and the Arizona Oil and Gas Conservation Commission. Its specific purpose is to set forth accurately, briefly and concisely the total picture regarding Arizona's oil, gas and helium potential, the general and specific geologic areas, the land and lease situation with specific emphasis on federal, State, Fee and Indian lands, the gas and oil pipelines, possible new lines, the helium plant coverage and a factual presentation of the general economic climate in the state of Arizona