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<br />WEIGHTED MONTHLY SALINITIES AT <br />SELECTED COLORADO RIVER STATIONS 11 <br />AND RUNNING 12-MONTH NIB-INPERIAL FLOW-WEIGHTED SALINITY DIFFERENTIAL <br />(in parts per million) <br /> <br />., <br /> <br />" <br /> <br />o <br />d <br />-... <br />{/J <br />--U <br />VJ <br /> <br /> Below Below <br /> Hoover Dam Parker Dam <br /> 5-Year 5-Year <br /> avg.!1 avg.!1 <br /> 1974-78 2002 2003 1974-78 2002 2003 <br /> Month <br /> Jan. 690 582 623 709 600 <br /> Feb. 675 611 706 608 <br /> March 684 605 699 608 <br /> April 680 600 700 609 <br />, May 677 595 698 602 <br />C' June 678 600 695 604 <br /> July 682 610 688 607 <br /> August 690 606 686 <br /> Sept 672 603 686 <br /> Oct 680 603 689 <br /> Nov. 682 609 692 <br /> Dee 681 609 702 <br /> <br />Palo Verde <br />Canal Near Blvthe <br />5-Year <br />avgJI <br />1974-78 2002 2003 <br /> <br />At <br />Imperial Dam <br />5-Year <br />avg.!1 <br />1974-78 2002 <br /> <br />At Northerly Inter- <br />national Boundarv <br />5-Year <br />avg.!1 <br />2003 1974.78 2002 2003 <br /> <br />Running <br />12-Month <br />Flow-WId. <br />Differential 31 <br />2002 2003 <br /> <br />751 613 913 708 711 1,041 856 891 139.1 <br />732 615 835 676 998 839 147.0 <br />727 549 805 675 925 783 152.2 <br />714 607 801 658 892 781 157.7 <br />709 617 822 679 962 871 157.6 <br />712 625 812 684 956 855 157.7 <br />709 625 . , 797 684 909 821 159.3 <br />706 800 701 907 828 156.1 <br />737 815 699 952 820 151.8 <br />739 854 711 1,070 899 146.3 <br />746 897 719 1,010 850 142.1 <br />731 877 756 999 887 140.9 <br /> <br />General Notes: <br /> <br />11 Salinities based on "sum of constituents". <br /> <br />f! 5-Year averages are arithmetic <br /> <br />'J.I 12-month flow-weighted differential between NIB and Imperial Dam throu9h month shown in left column. <br /> <br />----- <br />.--.." <br /> <br />. <br /> <br />143.5 <br /> <br />. <br /> <br />. <br />