. Water Supply and Irrigation Papers of the United States Geological Survey . table, in turn augmenting the acreagewhich can be cultivated and irrigated, and increasing the percentageof the rainfall which will enter the soil. The combination of inten-sive farming on small irrigated tracts with cattle raising on adjoiningnatural grass lands would seem to indicate a most attractive futurefor vast portions of the Great Plains and to contain possibilities olunique economic and social interest. The fundamental disadvantage in the utilization of undergroundsources of water is the danger of overdrawi
. Water Supply and Irrigation Papers of the United States Geological Survey . table, in turn augmenting the acreagewhich can be cultivated and irrigated, and increasing the percentageof the rainfall which will enter the soil. The combination of inten-sive farming on small irrigated tracts with cattle raising on adjoiningnatural grass lands would seem to indicate a most attractive futurefor vast portions of the Great Plains and to contain possibilities olunique economic and social interest. The fundamental disadvantage in the utilization of undergroundsources of water is the danger of overdrawing the natural supply. Iiregions in which the rainfall is light and catchment areas are small Jas in parts of southern California, it is easy to extend development olunderground sources so as to greatly exceed the natural rate of annuareplenishment. In this way underground reservoirs are depletecwhich have been ages in filling; principal as well as interest is drawiupon, and much disappointment must inevitably follow. U. S. GEOLOGICAL SURVE WATER-SUPPLY PAPER NO. 67 PL. VI. A. VIEW OF TOP OF COMPLETED SUBSURFACE DAM ON THE PACOIMA WASH,SHOWING WELLS ON UPPER SIDE OF SAME
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Keywords: ., bookauthorunitedst, bookcentury1900, bookdecade1900, bookyear1902
