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graphs of water levels in * » £ > rf ^ d X m l h e l J t 'S S L * ' water table is maintained by water seeping upwtwu aquifers. Natural discharge from the water table occurs year through seeps and small springs n ^ .^ o f ^ a s yL;as The ground base of the benches extending north and south of Jas Y e,.s & S r probably 1. evaporated o^trsnspt red over £ ^ vrhere the water-treble 1 1 > the njnount of natural discharge from°the j S ^ t S l e V n o t yet available, it appears probable that the amount is large, r ‘ “ 4 i-"rr»esS: a i r i e r - ^ S ^ ^ i v o t le X e n t . " S ? s s ^ t s V - — initiated and will be continued. I able 2 Chemical analyses of the shallow ground water in Las Vegas Valley Analyzed by University of Eovada, Agricultural Jbcperiment Station -I Parts per—m—i-l-l-io5n7— 37 2/ "" 2 2/ 3 2/ 4 1L 5 Ul ~---------- — Silica (SiOg) .................... Iron (Fe) . . • • * • • • 35 TR 37 71 1 Calcium (Ca) .................... Magnesium (Mg) ............. Sodium (iTa) ................ Potassium (K) . . . . . 72 21 l'S ' 187 607.1 73s *3 l.H 1^7.2 1U6.7 66.2 56.6 187.6 50.7 101.8 9.9 295 i 6*+ 297M Bicarbonate (HCOij) . . . , Sulfate (S0l| ) . • . Chloride (Cl) . . . . . 220 116 3 202.9 3838.5 287.9 UUU,1+ 69M-.6 19> 328.9 325.9 205.1 197 >+17 Fluoride (f) . . • » • Hitrate (UOjJ ................ .5 Dissolved solids Uoo 6332 1U62 1103 2827 Total hardness as CaCO? 266.1 2956.1 969.5 676.9 1U10
