"In Nevada the bedrock forms a corrugated surface consisting of more or less parallel mountain ranges and broad intervening troughs that are filled to great depths with rock waste washed from the mountains. These great deposits of rock waste were in large part laid down by torrential streams and are relatively coarse and porous. Because these deposits are porous the rain that falls upon them and the run-off that reaches them from the mountains sinks into them, and the valleys in which they lie are exceptionally arid. These deposits, however, form huge reservoirs in which the water is stored and in which, to the limit of the capacity of the reservoirs, it is protected from evaporation. So well is this water hidden that its existence was not suspected by many of the early travelers, and even today long desert roads on which there are no watering places, lead over areas where ground-water could easily be obtained.
"In a desert valley, even where no wells have been sunk, it is generally possible to ascertain and outline the areas where ground water lies near the surface and to make an intelligent forecast of the depths to water in other parts of the valley. If a sufficient number of observations are made, it is also generally possible to form a rough estimate of the quantity of water that is annually available in such a valley and to predict to some extent the capacity of wells, the quality of the water, and the cost of recovery."
To anyone familiar with Nevada, there are dozens of such desert reaches which must instantly suggest themselves to the mind, and it is interesting to speculate, not altogether idly, on how advantage might be taken of such conditions. The Bulletin particularly speaks of one of these areas:
"In an investigation recently made by O. E. Meinzer, of the United States Geological Survey of the Department of the Interior, in Big Smokey Valley and adjacent area near Tonopah, Nev., the character of the vegetation and other surface criteria show that the ground-water stands within ten feet of the surface over an area of 130,000 acres. The measurements made indicate that tens of thousands of acre feet of water are annually contributed by mountain streams and by rainfall to the underground reservoir, and that about the same quantity of ground- water is annually discharged into the atmosphere through the soil and the plants in the shallow water areas. It was estimated that in an area of 240,000 acres the ground-water lies within 50 feet of the surface and that in an area of 335,000 acres it lies within 100 feet of the surface. Detailed maps were made showing the location and extent of these areas."
Nevada, because of its peculiar geographical and climatological situation, will always need to irrigate its land to produce crops. Where irrigation waters are available, the soil has proved abundantly fertile, but Nevada has been handicapped by a lack of water for these very soils which would be capable of producing the best crops.
If, perhaps, underlying those fertile though now arid areas there is such a reservoir of untapped waters as the Bulletin describes, there must instantly occur to the mind the question: "Cannot these waters be made available?"
Elsewhere in Nevada great arid areas have been reclaimed by tapping such underground reservoirs and raising the waters to the surface for irrigation purposes with gasoline motors, where they have not flowed of their own accord, in artesian wells. Nevada has not ventured far into this field because it has not felt the necessity. But why wait on necessity? Why should not Nevada attempt to reach this water? It could easily do so and so add much valuable fertility to the state's already important resources.
Of course, if these new irrigation resources of the state were to become sufficiently utilized, then there would seem no reason why Nevada should not be one of our best agricultural states.
The Truckee River is a splendid asset to Reno. Fed by the eternal snows of the Sierra Nevadas, with a fall of 2,442 feet between Lake Tahoe and Pyramid Lake, it affords a water power equalled by few rivers in the U. S. A. Its power plants now supply light and power for all near-by mines; Mason Valley, Youngton, Virginia City and the Comstock Lode; yet these power stations do not generate one-tenth of the power that could be obtained. It is said that it would easily be possible to develop 40,000 horse-power within five miles of Reno.
This means that Reno has great advantages as an industrial center, and as water power is known to be low in cost and as there is an immense quantity of iron ore in the state, it might eventually be considered a fine place to manufacture war supplies, especially for use on the Pacific Coast.