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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 /> Cl <br /> 0 <br /> r-" <br /> W <br /> Below Below Palo Verde At At Northerly Inter- R~nning -l <br /> Hoover Dam Parker Dam Canal Near Blvthe Imperial Dam national Boundarv 12-Monlh w <br /> 5-Year 5-Year 5-Year 5-Year 5-Year Flow-WId, <br /> avgJI avgO' avg,O' avg,O' avgJI 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, 690 562 623 709 600 751 613 913 708 711 1,041 856 891 139,1 143,5 <br /> Feb, 675 611 640 706 608 732 615 635 676 700 998 639 798 147,0 137,3 <br /> March 664 605 699 606 727 549 605 675 925 763 152,2 <br /> April 660 600 700 609 714 607 601 658 692 761 157,7 <br /> May 677 595 698 602 709 617 822 679 962 871 157,6 <br />, <br />"" J~ne 678 600 695 604 712 625 812 684 956 855 157,7 <br />, <br /> July 682 610 688 607 709 625 797 684 909 821 159,3 <br /> A~9ust 690 606 666 706 600 701 907 626 156,1 <br /> Sept 672 603 666 737 815 699 952 620 151,S <br /> Oct 680 603 669 739 654 711 1,070 699 146,3 <br /> Nov, 682 609 692 746 697 719 1,010 650 142,1 <br /> Dec, 681 609 702 731 877 756 999 667 140,9 <br /> . <br /> <br />General Notes: <br /> <br />1/ Salinities based on "s~m of constit~ents", <br /> <br />?! 5-Year averages are arithmetic <br /> <br />~ 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left col~mn <br />