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<br />w <br />c.o Table 1.1 <br />~ <br />--J Observed Flow-weighted Average. Annual Satinity Concentrations <br /> at the Numeric Criteria Stations <br /> (Total Dissolved Solids in mg/L)II <br /> Calendar Below Below At <br /> Year Hoover Parker Imperial <br /> Dam Dam Dam <br /> 19722/ 723 747 879 <br /> 1973 675 709 843 <br /> 1974 681 702 834 <br /> 1975 680 702 829 <br /> 1976 674 690 822 <br /> 1977 665 687 819 <br /> 1978 678 688 812 <br /> 1979 688 701 802 <br /> 1980 691 711 760 <br /> 1981 681 716 821 <br /> 1982 680 713 826 <br /> 1983 658 678 727 <br /> 1984 597 611 675 <br /> 1985 556 561 615 <br /> 1986 517 535 577 <br /> 1987 519 538 612 <br /> 1988 529 540 648 <br /> 1989 564 559 683 <br /> 1990 587 600 702 <br /> 1991 634 635 753 <br /> 1992 651J.' 68~' 781~' <br /> <br /> <br />l'Determined by the USGS from data collected by Reclamation and the U.S. Geological Survey <br />and published in anAlity of Water. Colorado River Basin. Proe:ress R~rt: No. 16, 1993. <br /> <br />2'Values for 1972 are the numeric criteria. <br /> <br />~Iprovisional records. <br /> <br />2-6 <br />