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<br />-. <br /> <br />-" <br /> <br />WEIGHTED MONTHLY SALINITIES AT <br />SELECTED COLORADO RIVER STATIONS l' <br />AND RUNNING 12-MONTH NIB-IMPERIAL FLOW-WEIGHTED SALINITY DIFFERENTIAL <br />(in parts per million) <br /> <br />= <br />= <br />...... <br />..-.. <br />c..:> <br />..-.. <br /> <br /> Beiow Below <br /> Hoover Dam Parker Dam <br /> 5-Year 5-Year <br /> avg.Y avg }-' <br /> 1974-78 2003 2004 1974-78 2003 2004 <br /> Month <br /> Jan. 690 623 653 709 665 <br /> Feb. 675 640 657 706 627 <br /> March 684 601 699 621 <br /> Aprii 680 615 700 628 <br /> May 677 621 698 625 <br />~ June 678 621 695 632 <br /> July 682 623 688 635 <br /> August 690 620 686 631 <br /> Sept. 672 618 686 634 <br /> Oct. 680 628 689 634 <br /> Nov. 682 641 692 <br /> Dec 681 645 702 <br /> <br />Palo Verde <br />Canal Near Blvthe <br />5-Year <br />avgY <br />1974-78 2003 2004 <br /> <br />At <br />ImDerial Dam <br />5-Year <br />avg,?/ <br />1974-78 2003 <br /> <br />At Northerly Inter- <br />national Boundarv <br />5-Year <br />avg.Y <br />1974-78 2003 2004 <br /> <br />Running <br />12-Month <br />Flow-Wtd. <br />Differential 31 <br />2003 200 <br /> <br />2004 <br /> <br />751 648 913 711 766 1.041 891 890 143.5 1328 <br />732 636 835 700 998 798 137.3 <br />727 629 805 679 925 787 137.7 <br />714 631 801 680 892 777 134.9 <br />709 633 822 723 962 878 130.8 <br />712 634 812 711 956 844 127.2 <br />709 637 797 671 909 810 127.6 <br />706 635 800 689 907 867 131.0 <br />737 643 815 708 952 869 133.2 <br />739 639 854 726 1.070 930 133.0 <br />746 897 766 1.010 952 136.4 <br />731 877 772 999 896 136.0 <br /> . <br /> <br />General Notes: <br /> <br />jj Salinities based on "sum of constituents". <br /> <br />?! 5-Year averages are arithmetic <br /> <br />'J.I 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left column. <br /> <br />............ <br /> <br />-' <br />