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<br />WEIGHTED MONTHLY SALINITIES AT <br />SELECTED COLORADO RIVER STATIONS 1/ <br />AND RUNNING 12-MONTH NIB-INPERIAL FLOW-WEIGHTED SALINITY DIFFERENTIAL <br />(in parts pat million) <br /> <br /> Below Below Palo Verde At At Northerly Inter- Running <br /> Hoover Dam Parker Dam Canal Nesr Blvlhe ImDerial Dam national BoundalV 12-Month <br /> 5-Year 5-Year 5-Year 5-Year 5-Year Flow-Wtd. <br /> aVQ.ZI avg.1f avg.ZI avg.e' avg.ZI Differential " <br /> 1974-78 2000 2001 1974-78 2000 2001 1974-78 2000 2001 1974-78 2000 2001 1974-78 2000 2001 2000 2001 <br />Month , <br />Jan. 690 559 580 709 604 576 751 634 599 913 688 707 1,041 838 847 87.6 119.3 <br />Feb. 675 571 578 706 568 591 732 576 593 835 666 655 998 806 758 86.5 115.5 <br />March 684 586 585 699 576 590 727 586 599 805 650 659 925 743 747 88.5 114.8 <br />April 680 609 588 700 573 582 714 589 588 601 622 642 692 733 722 91.5 111.4 <br />May 677 607 566 696 564 593 709 596 -603 822 646 651 962 768 631 95.3 114.2 <br />c?> June 678 584 588 695 586 564 712 591~. 595 812 643 655 956 758 ..~.816 97.3 116.9 <br />July 682 573 592 688 597 709 584 797 653 682 909 759 804 101.8 -117.4 <br />August 690 566 584 686 582 706 582 800 664 702 907 788 676 102.8 119.1 <br />Sept. 672 543 593 666 570 737 579 815 672 707 952 791 898 109.6 121.9 <br />Oct. 680 556 581 689 565 739 583 854 673 712 1,070 750 1,010 116.9 132.4 <br />Nov. 682 572 692 576 746 824 897 684 1,010 810 120.2 <br />Dec. 681 578 702 581 731 599 877 683 999 813 119.5 <br />General Notes: I <br />11 Salinities based on "sum of constituents". <br />?! 5-Yeer averages are arithmetic <br /> <br />'J.I 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left column. <br />