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<br />tm!b <br /> <br />, <br />'" <br />, <br /> <br />Jan. <br />Feb. <br />March <br />April <br />May <br />June <br />July <br />Au3Ust <br />Sep. <br />Oct. <br />Nov. <br />Dec. <br /> <br />WEIGHl'ED fD'l'lELY SALINITIES Kr <br />SEUcrED CXllawx:l RIVER S'IM'ICH; 1/ <br />AND RJNNIN:i 12-+Dm1 NIB-~ FIJ::M-WEIGHl'ID SALINI'lY DIF'flRENl'IAL <br />(in parts per million) <br /> <br />BelCM <br />Hoover Dam <br />5-Year <br />Avg.Y <br />1974-78:96:1997 <br /> <br />BelCM Palo Verde <br />PcuXer Dam Canal ~r Blvthe <br />5-Yeary S-Year Y <br />Avg. Avg. <br />1974-78:96:1997 1974-78:96:'1997 <br /> <br />690 672 <br />675 674 <br />684 666 <br />680 662 <br />677 660 <br />678 693 <br />682 <br />690 <br />672 <br />680 <br />682 <br />681 <br /> <br />709 712 668 <br />706 705 660 <br />699 695 <br />700 683 <br />698 677 <br />695 672 <br />688 684 <br />686 673 <br />686 673 <br />689 673 <br />692 695 <br />702 700 <br /> <br />General Notes: <br /> <br />751 725 696 <br />732 741 670 <br />727 723 <br />714 704 <br />709 706 <br />712 693 <br />709 697 <br />706 690 <br />737 685 <br />739 685 <br />746 711 <br />731 712 <br /> <br />At <br />Tmn<>rh.l Dam <br />S-Y~ <br />Avg. <br />1974-78:1996:1997 <br /> <br />913 831 <br />835 800 <br />805 778 <br />801 752 <br />822 754 <br />812 745 <br />797 810 <br />800 778 <br />815 797 <br />854 776 <br />897 820 <br />877 820 <br /> <br />746 <br />687 <br />677 <br />676 <br />703 <br />682 <br />680 <br />668 <br /> <br />At Northerly Inter- <br />naticral Rno......-t..TV <br />S-Y~ <br />Avg. <br />1974-78:1996:1997 <br /> <br />RJnI'Iin) <br />12-1b1t:h . <br />Flow-Wtd. ., J <br />Differentialu <br />1996 1997 <br /> <br />1,041 967 826 <br />998 892 733 <br />925 831 742 <br />892 807 766 <br />962 774 760 <br />956 760 776 <br />909 830 764 <br />907 845 706 <br />952 894 <br />1,070 1,050 <br />1,010 1,080 <br />999 1,080 <br /> <br />74.8 <br />74.9 <br />73.3 <br />74.7 <br />83.8 <br />90.7 <br />87.3 <br />77.1 <br />73.4 <br />74.3 <br />75.0 <br />76.7 <br /> <br />1/ Salinities based an 'sum of constituents' except for BelCM Hoover Dam'Mhid1 are based on pan residue <br />y 5-Year averages are arithmetic <br /> <br />11 12-m:mth fl~ighted differential between NIB and IIlperial ~ nart:h shown in left oolU111l1. <br /> <br />70.6 <br />53.6 <br />50.6 <br />54.4 <br />58.2 <br />66.1 <br />73.7 <br />68.7 <br /> <br />. <br />