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<br />WEIGHTED MJNI'HLY SALINITIES AT 11 <br />SELECI'ED CDIDRAIX> RIVER srnTIONS - <br />AND RUNNThG 12-MJNIH NIB-IMPERIAL FU::W-WEIGHTED SALINI'IY DIFFERENTIAL <br />(in parts per million) <br /> <br />o <br />= <br />!-' <br />N <br />=:l <br />........ <br /> <br /> Below Below Palo verde At At Northerly Inter- Running <br /> H=ver Dam Parker Dam Canal Near Bl vthe Itmerial Dam national BoundaIv 12-M::>nth , <br /> 5-Year21 5-Year2/ 5-Year 2/ 5-Y~ 5-Y~/ Flow-Wtd. 3 <br /> Avg.- Avg.- Avg.- Avg.j Avg.- Differential- <br /> M::>nth 1974-78:99:2000 1974-78:99:2000 1974-78:99:2000 1974-78:1999:2000 1974-78:1999:2000 1999 2000 <br />I Jan. 690 591 559 709 591 751 598 913 687 688 1,041 730 838 44.6 87.6 <br />-..J <br />I Feb. 675 610 571 706 579 732 609 835 701 666 998 856 806 57.8 86.5 <br /> March 684 583 586 699 604 727 616 805 710 650 925 782 743 60.3 88.6 <br /> April 680 585 609 700 614 714 625 801 684 622 892 773 733 59.5 91.5 <br /> May 677 575 607 698 595 709 618 822 705 646 962 795 768 55.9 95.3 <br /> June 678 571 695 580 712 599 812 680 956 778 54.5 <br /> July 682 604 688 597 709 610 797 678 909 732 51.6 <br /> August 690 604 686 586 706 592 800 698 907 822 52.0 <br /> Sep. 672 581 686 564 737 592 815 643 952 692 53.1 <br /> Oct. 680 561 689 599 739 600 854 620 1,070 688 51.9 <br /> Nov. 682 562 692 600 746 607 897 674 1,010 770 57.8 <br /> Dec. 681 563 702 580 731 604 877 725 999 848 77.7 . <br /> <br />General Notes: <br /> <br />1/ Salinities based on 'sum of =nstituents' except for Below Hoover Dam which are based on pan residue <br /> <br />2,1 5-Year averages are arithrretic <br /> <br />1/ 12-rronth flow-weighted differential between NIB and Imperial through rronth shown in left =lumn. <br />