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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 <br />(in parts per million) <br /> <br /> Below Below Palo Verde At At Northerly Inter- Running <br /> Hoover Dam Parker Dam Canal Near Blvthe Imoerial Dam national Boundarv 12-Month <br /> 5-Year 5-Year 5-Year 5-Year 5-Year Flow-WId. <br /> avg." avg," avg.!' avg." avg." Differential 3f <br /> 1974.78 2001 2002 1974.78 2001 2002 1974.78 2001 2002 1974.78 2001 2002 1974.78 2001 2002 2001 200 <br /> Month <br />~ Jan, 690 580 582 709 576 600 751 599 613 913 707 708 1,041 847 856 119.3 139.1 <br /> Feb, 675 578 611 706 591 608 732 593 615 835 655 676 998 758 839 115.5 147.0 <br /> March 684 585 605 699 590 608 727 599 549 805 659 675 925 747 783 114.8 152.2 <br />;/' April 680 588 600 700 582 609 714 588 607 801 642 658 892 722 781 111.4 157.7 <br /> May 677 588 595 698 593 602 709 603 617 822 651 679 962 831 871 114.2 157.6 <br /> , <br /> '" June 678 588 600 695 584 604 712 595 625 812 655 684 956 816 855 116.9 157.7 <br /> . <br /> July 682 592 610 688 590 607 709 597 625 797 682 684 909 804 821 117.4 1593 <br /> August 690 584 606 686 594 706 597 800 702 701 907 876 828 119.1 156.1 <br /> Sept. 672 593 686 590 737 594 815 707 699 952 898 820 121.9 151.8 <br /> Oct. 680 581 689 596 739 601 854 712 1,070 1,010 132.4 <br /> Nov. 682 601 692 594 746 605 897 714 1,010 920 136.2 <br /> Dec. 681 585 702 602 731 615 877 742 999 896 138.9 <br /> . <br /> General Notes: <br /> 11 Salinities based on "sum of constituents". <br /> ?/ 5.Year averages are arithmetic <br /> 'JI 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left column, <br /> <br />" <br />