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<br />The virgin flow for 1977 at Lee Ferry of 5.47 maf was the <br /> <br />C) driest year on record for the periOd 1906-1982. The <br />~ <br />~ estimated virgin flow for water year 1983 is in excess of 24 <br />~ <br />million acre-feet which would make 1983 one of the wettest <br /> <br />years on record. <br /> <br />Storage Changes <br />Upper and Lower Basin active reservoir storage has <br />increased since 1972 as shown on Figure 1. Basinwide storage <br />at the end of calendar year 1982 was about 16.3 million acre- <br />feet greater than at the end of 1972. Of the total increase, <br />10.8 million acre-feet was in the Upper Basin and 5.5 <br />million acre-feet was in the Lower Basin. The 1982 oalendar <br /> <br />year storage in the Colorado R~ver system was about 5.1 <br />million acre-feet greater than the 1981 value. <br /> <br />During water year 1983 all of the major reservoirs on <br />the Colorado River filled to capacity and spilled. These <br /> <br />large flows provided some immediate reduction in salinity <br />concentrations at all of the major dams primarily due to <br /> <br />dilution effects. <br /> <br />Historical Uses <br /> <br />Estimated historical Upper and Lower Basin uses for <br /> <br /> <br />calendar years 1973 through 1982 are shown on Table 2. <br /> <br />-3- <br /> <br />. <br /> <br />~ <br />