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<br />L <br /> <br />WEIGHTED MONTHLY SALINITIES AT <br />SELECTED COLORADO RIVER STATIONS 11 <br />AND RUNNING 12-MONTH NIB-INPERIAL FLOW-WEIGHTED SALINITY DIFFERENTIAL <br />(in parts per million) <br /> <br /> Below Below Palo Verde At At Northerly Inter- Running <br /> Hoover Dam Parker Dam Canal Near Blvthe Imoerial Dam national Boundarv 12-Month ;:? <br /> '-' <br /> 5-Year 5-Year 5-Year 5-Year 5-Year Flow-Wtd. .__, <br /> avg,Y avg.Y avg." avg.Y avgJI Differentiall'o.:l <br /> 1974-78 2000 2001 1974-78 2000 2001 1974-78 2000 2001 1974-78 2000 2001 1974-78 2000 2001 2000 2OOr-J <br /> Month '. <br /> 119.3 · <br /> Jan. 690 559 580 709 604 751 634 913 688 707 1,041 838 847 87.6 <br /> Feb. 675 571 578 706 568 732 576 835 666 655 998 806 758 86.5 115.5 <br /> March 684 586 585 699 576 727 586 805 650 659 925 743 747 88.5 114.8 <br /> April 680 609 588 700 573 714 589 801 622 642 892 733 722 91.5 111.4 <br />, May 677 607 588 698 584 709 596 822 646 651 962 768 831 95.3 114.2 <br />.... June 678 584 588 695 586 712 597 812 643 655 956 758 816 97.3 116.9 <br />, <br /> July 682 573 688 597 709 584 797 653 909 759 101.8 <br /> August 690 566 686 582 706 582 800 664 907 788 102,8 <br /> Sept. 672 543 686 570 737 579 815 672 952 791 109.6 <br />. Oct. 680 556 689 565 739 583 854 673 1,070 750 116.9 <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 /> . <br /> General Notes: . <br /> 11 Salinities based on "sum of constituents". <br /> 2J 5-Year averages are arithmetic <br /> <br />'J.I 12-month flow-weighted differential between NIB and Imperial Dam through month shown in left column. <br />