WSP06606

• File Number: 8278.400
• Description: Title I - Mexican Treaty and Minute 242
• Basin: Colorado Mainstem
• Date: 1/1/1996
• Author: IBWC
• Title: Minute 242 Annual Report
• Water Supply Pro - Doc Type: Annual Report

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Dam, b) arriving at Imperial Dam, and the resulting salinity differential were as follows:

u.s. Coun( Mexican Count.
Waters !mmU Lmmll
a) Upstream of Morel os Dam 859 940
b) Aniving at Imperial Dam 782 829
Salinity Differential 77 111

The annual average salinities resulting from operations under Minute No. 242, since it became
effective on June 24, 1974, are tabulated as follows:

ANNUAL AVERAGE SALINITY (U.S. COUNT) AS TOTAL DISSOLVED SOLIDS
(PPM) DIFFERENTIAL
YEAR AT IMPERIAL DAM UPSTREAM OF MORELOS DAM (PPM)
1974 (.hm 25 - Dee 31) 832 972, 140
1975 829 964 135
1976 ' , - - - 823 955 . 132'- - ,~
1977 820 943 123
1978 812 928 1I6
1979 809 739 -70
1980 755 740 -15
1981 806 924 1I8,
1982 825 933 108
1983 733 742 9
1984 670 676 6
1985 607 639 32
- , - - - -- - . -
1986 579 600 21
1987 610 656 46
1988 655 733 78
1989 682 800 1I8
1990 721 846 125
1991 751 858 107
1992 781 898 1I7
1993 767 613 -154
1994 797 875 78
1995 787 869 82
1996 782 859 77

* The difference in the u.s. and Mexican counts is a result of different methods of analysis and of computing the total
dissolved solids used by laboratories in each country.

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