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<br />.-..01 _.. <br /> <br /> WEIGHl'ED M:NIHLY SALINITIES AT <br /> SEm::l'I!D CDIaWXl RIVER STATICIlS JI <br /> 1lND HJNNIN:; 12-M:NIH NIB-IMPmUAL F'Iai-WEIGflEI) SM.INnY DIFFERENl'IAL <br /> (in parts per millien) <=:) <br /> = <br /> ..... <br /> ,,-' <br /> 1Z~ 117 $19 /001 .or iJO t'.) <br /> .-- ~'1 <br /> BelCM BelCM Palo Verde At At Northerly Inter- R.Innin:J <br /> Hoover Dam ParKer Dam Canal Near Bl vthe """""ri"l Dam national RnlJrrl"lV 12~ <br /> 5-Yeary 5-Year 5-Year 5-Y~ 5-Y~ FlOlo'-wtd. . <br /> Avg. Avg.V Avg.Y Avg. Avg. Differential <br /> M::>ulh 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 /> March 684 646 610 699 659 727 675 805 677 627 925 742 676 50.6 41.4 <br />I April 680 640 602 700 650 714 664 801 676 651 892 766 736 54.4 42.2 <br />-.J <br />I May 677 635 595 698 639 709 641 822 703 656 962 760 771 58.2 47.2 <br /> June 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 /> Auoust 690 629 602 686 634 706 645 800 668 690 907 706 786 68.7 52.5 <br /> Sep. 672 628 619 686 616 737 640 815 691 652 952 717 692 62.8 53.9 <br /> Oct. 680 627 611 689 624 739 647 854 717 679 1,070 843 760 64.8 54.4 <br /> NCI\f. 682 626 582 692 634 746 655 897 743 684 1,010 879 717 66.9 51.5 <br /> Dec. 681 625 605 702 731 877 767 647 999 890 659 68.7 42.9. <br /> Jan 99 <br /> 591 687 730 44.6 <br /> <br />General Notes: <br /> <br />1/ Salinities based on I sum of cxn;tituents I except for BelCM Hoover Dam l<Ihi.c:h are based en pan residue <br />y 5-Year averages are arithmetic <br />V 12-m:JIlth flClOl-'Neighted differential }"ebjeen NIB and IIlperlal thrcuJh JOOIlth shown in left column. <br />