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<br /> WEIGRl'ED M:N1HLY SALINITIES AT <br /> SEIB:I'ED CDlDRAOO RIVER STATIOOS 11 0 <br /> AND RJNNIN; 12-Klml NIB-IMPERIAL F'J:.ao/-WEIGRl'ED SALINl'lY DIFFERENI'IAL = <br /> (in parts per million) '""" <br /> '""" <br /> -.j <br /> N <br /> Below Below Palo Verde At At Northerly Inter- ~ <br /> Hoover ram Parker ram Canal Near Bl vthe ImDerial ram national Bc:luJ'rl;ol'V 12-fb1th <br /> 5-Yeary 5-Year 5-Year y 5-Y~ 5-Y~ FlCllM<ltd. . <br /> Avg. Avg.Y Avg. Avg.Y Avg. Differential: <br /> Month 1974-78:98:1999 1974-78:98:1999 1974-78:98:1999 1974-78:1998:1999 1974-78:1998:1999 1998 1999 <br /> Jan. 690 613 591 709 623 591 751 609 598 913 665 687 1,041 698 730 57.4 44.6 <br />, Feb. 675 610 610 706 615 579 732 624 609 835 629 701 998 641 856 44.1 57.8 <br />'" <br />, March 684 610 583 699 607 604 727 612 616 805 627 710 925 676 782 41.4 60.3 <br /> April 680 602 585 700 610 614 714 613 625 801 651 684 892 736 773 42.2 59.5 <br /> May 677 595 575 698 611 595 709 619 618 822 656 705 962 771 795 47.2 55.9 <br /> June 678 607 571 695 614 580 712 620 599 812 643 680 956 742 778 49.2 54.5 <br /> July 682 599 604 688 590 597 709 600 610 797 663 678 909 756 732 50.4 51.6 <br /> August 690 602 604 686 588 706 601 800 690 698 907 786 822 52.5 52.0 <br /> Sep. 672 619 581 686 587 737 597 815 652 643 952 692 692 53.9 53.1 <br /> Oct. 680 611 561 689 592 739 597 854 679 620 1,070 760 688 54.4 51.9 <br /> Nov. 682 582 562 692 600 746 605 897 684 674 1,010 717 770 51.5 57.8 <br /> Dec. 681 605 702 581 731 596 877 647 999 659 42.9 . <br /> <br />General Notes: <br /> <br />1/ Salinities based on 'sum of cx>l1stituents' except for Below Hoover Dam web are based (Xl pan residue <br />y 5-Year averages are arittunetic <br />1/ 12-month flow--weighted differential between NIB an:l Inperial t:hra1gh m:mth shown in left =1UllD'l. <br />