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<br />Salinity Concentration at Monitoring Stations <br />Salinity concentration at monitoring stations below <br /> <br />Hoover Dam for years 1973 through 1982 are shown on Table 3. <br />o <br />~ These values are all less than the 1972 numeric criteria. <br />0' <br />o <br /> <br />TABLE 3 <br />FLOW-WEIGHTED AVERAGE ANNUAL SALINITY CONCENTRATIONS <br />AT SELECTED STATIJNS <br />(Total Dissolved Solids in mg/l*) <br />Calendar Yeai' <br /> <br />Numeric <br />Criteria 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 <br /> <br />Below Hoover <br /> Dam 723 706 686 685 674 667 686 694 706 678>11< 682Wl1 <br />Below Parker <br /> Dam 747 726 700 702 699 681 681 703 684 7211<>1 717u <br />At Imperial <br /> Dam 879 8b6 836 828 823 821 812 809 758 816*1< 82511>1 <br /> <br />nDetermined annually by the BUreau of Reclamation from data collected by <br />the U.S. Geological Survey. <br /> <br />a.Provisional records. <br /> <br />Statu8 of ~alinity Control Activities <br />In this annual progress report, salinity control <br /> <br />projects in which both Reclamation and Agriculture are in- <br /> <br />volved are describ~d as joint rather than separate projects. <br /> <br />This should eliminate seme confusion and better explain the <br /> <br />status and progress in plannine and implementing the various <br /> <br />salinity projects. <br /> <br />Construction progr'ess on <br /> <br />the salinity projects <br /> <br />authorized by Title II of P.L. 93-320 or other measures that <br /> <br />-6- <br /> <br />,,.;j, -~'.;l~~ <br />