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<br />o <br />N <br />W <br />0) <br /> <br />Table 2-1 <br />Observed Flow-Weighted Average Salinity <br />at the Numeric Criteria Stations <br /> <br /> (Total Dissolved Solids in m../Ll9 <br />Calendar Year Below Hoover Dam Below Parker Dam At Imperial Dam <br />1970 743 760 896 <br />1971 748 758 892 <br />1972 724 734 861 <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 691 712 760 <br />1981 681 716 821 <br />1982 679 713 827 <br />1983 659 678 727 <br />1984 598 611 675 <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 629 624 749 <br />1992 657 651 767 <br />1993 665 631 785 <br />1994 667 673 796 <br />1995 654 671 803 <br />1996 618 648 768 <br />1997 625 612 710 <br />1998 604 559 655 <br />1999 580 591 681 <br />2000 582 580 658 <br />2001 587 589 681 <br /> <br />9 Determined by the U.S. Geological Survey (USGS) from data collected by the U.S. Bureau of Reclamation <br />and USGS and published in Oualitv of Water. Colorado River Basin. ProllYess ReDort No. 20, 2001 <br /> <br />2-5 <br />