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<br />001448
<br />Summary
<br />The following table summarizes an analysis of satellite imagery for the month of June for
<br />the years 1984, 1998, and 2000 that was performed in an attempt to determine the amount
<br />of irrigated acreage in Mexicali and San Luis Valleys, so as to use the irrigated acreage to
<br />calculate a consumptive use demand. The analysis was conducted by performing a
<br />natural color analysis of the imagery and grouping the colors into 15 classifications based
<br />on observations.
<br /> JUNE 1984 SATELLITE IMAGE
<br /> District Total Irrigable Consumptive
<br /> Acreage Acreage Use Demand\1
<br /> I 129,814 67,252 269,009
<br /> II 135,439 74,798 299,191
<br /> III 85,481 42,644 170,575
<br /> IV 33,177 17,031 68,125
<br /> V 83,844 48,313 193,251
<br /> VI 103,448 72,734 290,935
<br /> VII 118,887 74,653 298,612
<br /> TOTAL 690,091 :J97,425 1,589,699
<br /> JUNE 1998 SATELLITE IMAGE
<br /> District Total Irrigable Consumptive
<br /> Acreage Acreage Use Demand\1
<br /> I 129,773 66,941 200,822
<br /> II 135,337 55,860 167,579
<br /> III 85,475 32,105 96,314
<br /> IV 33,172 11,023 33,070
<br /> V 83,845 29,008 87,023
<br /> VI 103,443 21,507 64,521
<br /> VII 118,781 21,507 64,521
<br /> TOTAL 689,825 :Z37,950 713,849
<br /> JUNE 2000 SATELLITE IMAGE
<br /> District Total Irrigable Consumptive
<br /> Acreage Acreage Use Demand\1
<br /> I 129,824 88,047 264,142
<br /> II 135,394 70,722 212,165
<br /> III 85,492 49,789 149,366
<br /> IV 33,173 20,881 62,644
<br /> V 83,872 55,609 166,826
<br /> VI 103,427 42,778 128,334
<br /> VII 118,864 53,413 160,240
<br /> TOTAL 690,047 :181,239 1,143,718
<br /> \1 Consumptive use demand calculated by multiplying irrigable
<br /> acreage by a use rate of 3 fl!~lcre per year
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