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<br />WEIGHI'ID K:NlHLY SALDlI'l'IES AT <br />SEIIrl'ED Cl)LCIWX) RIvmt S'IMI(H; 11 <br />1lND RJNNIOO 12-fDlIH NIB-IMPERIAL Flai-WEIGfl'ED SALINl'lY DIFFERml'IAL <br />(in parts per millien) <br /> <br /> BelClil BelClil Palo Verde At At Northerly Inter- ~ . <br /> Hoover Dam Parker Dam Canal Near Bl vthe ~1"'iAl Dam naticmal lh,m,.tV 12:-fb1tl1 <br /> 5-YearV 5-YeBry 5-Year y 5-Y~ 5-Y~ FlClii""wt:d.y <br /> Avg. Avg. Avg. Avg. Avg. Differential: <br /> ft.Jllth 1974-78:97:1998 1974-78:97:1998 1974-78:97:1998 1974-78:1997:1998 1974-78:1997:1998 1997 1998 <br /> Jan. 690 655 613 709 668 751 696 913 746 665 1,041 826 698 70.6 57.4 <br /> Feb. 675 649 610 706 660 732 670 835 687 629 998 733 641 53.6 44.1 <br />I March 684 646 610 699 659 727 675 805 677 627 925 742 676 50.6 41.4 <br />'" <br />I llpril 680 640 602 700 650 714 664 801 676 651 892 766 736 54.4 42.2 <br /> May 677 635 595 698 639 709 641 822 703 656 962 760 771 58.2 47.2 <br /> JlD1e 678 635 607 695 635 712 631 812 682 643 956 776 742 66.1 49.2 <br /> July 682 634 599 688 644 709 647 797 680 663 909 764 756 73.7 50.4 <br /> A1.J;Just 690 629 686 634 706 645 800 668 907 706 68.7 <br /> Sep. 672 628 686 616 737 640 815 691 952 717 62.8 <br /> Oct. 680 627 689 624 739 647 854 717 1,070 843 64.8 <br /> Nov. 682 626 692 634 746 655 897 743 1,010 879 66.9 . <br /> Dec. 681 625 702 731 877 767 999 890 68.7 <br /> <br />General Notes: <br /> <br />Y Salinities based on 'sum of oanstituents' except for BelClil HoeNer Dam which are based en pm residue <br />y 5-Year averages are arithmetic <br /> <br />Y 12-m:mth flow-wei.ghted differential betwen NIB ani Inperial through m:mth shown in left oolU11'1l. <br />