“…During the Quaternary, the Great Basin of the western United States was the site of several large lake systems (Russell, 1885;Gilbert, 1890;Broecker and Orr, 1958;Broecker and Kaufman, 1965;Horrison and Frye, 1965;Hifflin and Wheat, 1977). Various workers have attempted to estimate the type of paleoclimate responsible for the creation and maintenance of these lakes (Russell, 1885;Jones, 1925;Antevs, 1952;Broecker and Orr, 1958;Snyder and Langbein, 1962;Galloway 1970;Reeves, 1973;Brakenridge, 1978) usually postulating a change in the precipitation or evaporation rate as the controlling factor.…”