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<br /> TABLE 15 <br /> LAKE rEAD AT INTAKE TOWERS ABOVE HOOVER DAM C', <br /> r 'j <br /> I 1952 r. ) <br /> 3/3P 10/2 19/30 9128 lOll 10/] 9/23 9129 9/~B 9127 9/30 CHA NGE SINCE e, <br /> D,I,n: ................... ]941 1943 ]9c\4 ]945 Wl6 1941 ]948 ]949 ]950 1951 1952 1941 19S1 <br /> I <br /> Wa\er slIrface elc\'a\i..m feet 1170 1195 11187 1178 1158 1178 1\82 1187 1\69 1164 1190 +20 +26 <br /> I <br /> Annual inAow 70 of normal 117 80 I 9~ 84 63 95 96 103 78 72 132 <br /> Electrical conJucti.."ity, I <br /> I <br /> K X 10'] .............. 1190 ]050 11020 994 993 979 909 86.1 907 961 793 -;197 -168 <br /> I <br />'" AnaJ,"ses in Parll.O per l\1ilJion <br />.., <br /> Di~soh"ed solids. . . . . . . . . . 807 624 604 580 636 614 567 5.\3 567 6]9 494 -313 -125 <br /> Total hardness........... 398 3~0 (318 308 3]9 317 29.\ 280 289 308 259 -139 -49 <br /> Carhonate hanlness ...... ]41 121 '123 117 12.\ 122 ]21 120 121 ]20 113 -28 -7 <br /> I <br /> Noncarbunate hardlws5 ... 257 219 119.\ 191 194 195 174 160 168 188 ]46 -III -42 <br /> Sulfate SO. .............. 373 292 1266 252 277 267 242 234 239 270 207 -166 ~3 <br /> Chloride Cl. ............. 83 63 64 6.\ 72 68 61 59 6] 67 50 -33 -]7 <br /> I <br /> -Maximum ~alinily of record, just prior 10 the ~rst fiJljng and spillway o\'erRow, and resulting from the low inRow of the two preceding years, 65%. <br /> and 57% of normal for 1939 and 1940, respecth:ely. . <br /> I <br /> I <br />