WSP11037

• File Number: 8210.140.20.A
• Description: Colorado River Basin Organizations/Entities - CRBSF - Colorado River Board of California
• Date: 5/28/2000
• Author: CRBC
• Title: Colorado River Water Report
• Water Supply Pro - Doc Type: Report/Study

WEIGHTED M::JNIHLY SALINITIES AT 1/
SELECTED CDIDRAID RIVER STI\.TIONS -
AND RUNNIN:; 12-M::JN'IH NIB-IMPERIAL FI.CW-WEIGHTED SALINITY DIFFERENTIAL
(in parts per million)

Bel~ Bel~ Palo Verde At At Northerly Inter-
H=ver Dam Parker Dam Canal Near Bl vthe Irmerial Dam national Boundarv
5-Year2/ 5-Year2/ 5-Year 2/ 5-Y~/ 5-Y~/
Avg.- Avg.- Avg.- Avg.- Avg.-
M:mth 1974-78:99:2000 1974-78:99:2000 1974-78:99:2000 1974-78:1999:2000 1974-78:1999:2000
Jan. 690 591 559 709 591 751 598 913 687 688 1,041 730 838
Feb. 675 610 571 706 579 732 609 835 701 666 998 856 806
I Ma=h 684 583 586 727 616 805 710 650 925 782 743
..... 699 604
I April * 680 585 609 700 614 714 625 801 684 892 773
M3.y 677 575 698 595 709 618 822 705 962 795
June 678 571 695 580 712 599 812 680 956 778
July 682 604 688 597 709 610 797 678 909 732
August 690 604 686 586 706 592 800 698 907 822
Sep. 672 581 686 564 737 592 815 643 952 692
Oct. 680 561 689 599 739 600 854 620 1,070 688
Nov. 682 562 692 600 746 607 897 674 1,010 770
Dec. 681 563 702 580 731 604 877 725 999 848

* There is no Irrperial or NIB April 2000 data yet. IBWC is contesting Mexico's April 'IDS count for NIB.

General Notes:

1/ Salinities based on 'sum of constituents' except for Bel~ H=ver Dam which are based on pan residue

2/ 5-Year averages are arithmetic

1/ 12-rronth fl~-weighted differential between NIB and Irrperial through rronth shaNn in left column.

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Running :
12-M:mth I
Fl~-Wtd. 3.:
Differential- I
1999 2000 :
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44.6
57.8
60.3
59.5
55.9
54.5
51.6
52.0
53.1
51.9
57.8
77.7

87.6
86.5
88.6

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