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<br />w <::> <br /> <br />1 <br />I _ <br /> <br />Running , <br />12-Month <br />Flow-WId, <br />Differential 31 <br />2002 200 <br /> <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 <br /> Hoover Dam Parker Dam <br /> 5-Year 5-Year <br /> avg,Y avg,Y <br /> 1974,78 2002 2003 1974,78 2002 2003 <br /> Month <br /> Jan, 690 582 623 709 600 <br /> Feb, 675 611 640 706 608 <br /> March 684 605 699 608 <br /> April 680 600 700 609 <br /> , May 677 595 698 602 <br /> -.J June 678 600 695 604 <br /> . <br /> July 682 610 688 607 <br />~ August 690 606 686 609 <br />.' Sept 672 603 686 612 <br /> Oct 680 603 689 602 <br />.,-- Nov, 682 609 692 609 <br /> Dee, 681 609 702 615 <br /> <br />Palo Verde <br />Canal Near Blvthe <br />5-Year <br />avg,Y <br />1974,78 2002 2003 <br /> <br />At Northerly Inter- <br />national Boundarv <br />5-Year <br />avg,Y <br />1974,78 2002 2003 <br /> <br />At <br />Imperial Dam <br />5-Year <br />avg,Y <br />1974,78 2002 <br /> <br />2003 <br /> <br />751 613 913 708 711 1,041 856 891 139,1 <br />732 615 835 676 700 998 839 798 147,0 <br />727 549 805 675 679 925 783 787 152,2 <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 />706 616 800 701 907 828 156,1 <br />737 619 815 699 952 820 151,8 <br />739 603 854 711 1,070 899 146,3 <br />746 614 897 719 1,010 850 142,1 <br />731 629 877 756 999 887 140,9 <br /> <br />General Notes: <br /> <br />11 Salinities based on "sum of constituents", <br /> <br />'1,,1 5-Year averages are arithmetic <br /> <br />~ 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left column, <br /> <br />~ <br />~~ <br /> <br />......... ~ <br /> <br />c <br />c:: <br />>- <br />c...: <br /> <br />.:;;....' <br /> <br />143,5 <br />137,3 <br />137,7 <br /> <br />-- <br /> <br />. <br /> <br />~ <br /> <br />~ <br />