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<br /> WEIGHTED MONTHLY SALINITIES AT <br /> SELECTED COLORADO RIVER STATIONS!l <br /> AND RUNNING 12-MONTH NIB-INPERIAL FLOW-WEIGHTED SALINITY DIFFERENTIAL 0 <br /> (in parts per million) = <br /> ~ <br /> ..... <br /> 0 <br /> c;J <br /> Below Below Palo Verde At At Northerly Inter- Running <br /> Hoover Dam Parker Dam Canal Near Blythe Imperial Dam national Boundary 12-Month <br /> 5-Year 5-Year 5-Year 5-Year 5-Year Flow-Wtd <br /> avg.!' avgJ' avg.!' avg.<' avgJ' Differential" <br /> 1974-78 2002 2003 1974-78 2002 2003 1974-78 2002 2003 1974-78 2002 2003 1974.78 2002 2003 2002 2003 <br /> Month . <br /> Jan. 690 582 623 709 600 665 751 613 648 913 708 711 1,041 856 891 139.1 1435 <br /> Feb. 675 611 640 706 608 627 732 615 636 835 676 700 998 839 798 147.0 137.3 <br /> March 684 605 601 699 608 621 727 549 629 805 675 679 925 783 787 152.2 137.7 <br /> April 680 600 615 700 609 628 714 607 631 801 658 680 892 781 777 157.7 134.9 <br />~ -. - - '- , -'May 677 595 621 698 602 625 709 617 633 822 679 723 962 871 878 157.6 130.8 <br />. <br /> -;-J June 678 600 621 695 604 632 712 625 634 812 684 711 956 855 844 157.7 1272 <br /> July 682 610 623 688 607 635 709 625 637 797 684 671 909 821 810 159.3 127.6 <br /> August 690 606 620 686 609 706 616 800 701 689 907 828 867 156.1 131.0 <br /> Sept. 672 603 618 686 612 737 619 815 699 952 820 151.8 140.4 <br /> Oct. 680 603 689 602 739 603 854 711 1.070 899 146.3 <br /> Nov. 682 609 692 609 746 614 897 719 1.010 850 142.1 <br /> Dec. 681 609 702 615 731 629 877 756 999 887 140.9 <br /> . <br /> <br />General Notes: <br /> <br />11 Salinities based on "sum of constituents". <br /> <br />?/ 5-Year averages are arithmetic <br /> <br />'.11 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left column. <br />