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<br />N' <br />w <br />c.c <br />c.;1 <br /> <br />Historical Uses <br /> <br />Estimated historical Upper and Lower Basins uses for <br />the calendar year 1973 through 1978 are shown on Table 3. <br />Salinity at Monitoring Stations <br />Salini ties at monitoring stations below Hoover Dam for <br />the years 1973 through 1978 are shown on Table 4. These values <br />are all less than the 1972 numeric criteria. <br /> <br />TABLE 2 <br /> <br /> END OF CALENDAR YEAR ACTIVE RESERVOIR <br /> STORAGE AND STORAGE CHANGES <br /> (1,000 Acre-feet) <br /> Upper Basin Lower Basin Total <br />1972 <br />Storage 17,6$2 20,705 38.387 <br />1973 <br />Storage 22,720 21,851 44, 571 <br />Change from 1972 + 5,038 + 1,146 + 6,1$4 <br />1974 <br />Storage 22,64$ 21,814 44,462 <br />Change from 1973 7Z 37 109 <br />lW <br />Storage 25,721 22,180 47,901 <br />Change from 1974 + 3, 073 + 366 + 3,439 <br />Change since 1972 + 8,039 + 1,475 + 9,514 <br />1976 <br />Storage 23,65$ 23,543 47,201 <br />Change from 1975 - 2,063 + 1,363 700 <br />Change since 1972 + 5,976 + 2,$38 + 8,814 <br />1977 <br />Storage 1$,98$ , 22,448 41,436 <br />Change from 1976 - 4,670 - 1,095 - 5, 765 <br />Change since 1972 + 1.3 06 + 1,743 + 3,049 <br /> lr <br />