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<br />I J <br /> J <br /> i <br />I <br /> SALINITY <br />I Parts per Million <br /> Colorado River at Northern Boundary <br /> From IB&WC graph, From Mexican Section <br />I distributed 6 May 64 IB&WC 25 Aug 72 <br /> No. of days <br />I represented Days <br /> 1!2!! by samples ~ x ppm <br />I Jan 1961 1270 <br />Feb 1390 <br />I Mar 1290 <br /> Apr 1420 <br />I May 1700 <br />I Jun 1300 30 1110 33,300 <br />Jul 1200 29 1201 34,B20 <br />I Aug 1210 31 1252 38,820 <br /> Sep 1510 20 1656 33,120 <br />I Oct 2500 8 2665 21,318 <br />I Nov 2430 27 2519 68,013 <br />Dee 1910 30 1765 52,950 <br />I Total 19,130 175. 282,341 <br /> Divided by 12 175 <br />I Average 1594 1613 <br />I <br />I <br /> Maximum for year 3033 ppm on Nov 22 and Dee 13 <br />I Minimum for year 1060 ppm on Jul 23 <br />I <br />I Figure 13b <br /> ---- <br />