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<br />Crop Consumptive Use of Applied Water = Agricultural Deliveries
<br />- Agricultural Tailwater
<br />- Reclamation Leaching
<br />- Crop leaching
<br />
<br />Table III.C.l-l presents a summary of the four components of agricultural water use for the time
<br />period 1987 to 1994.
<br />
<br />Table IlL C. 1-1 Agricultural Water
<br />
<br /> Volume Delivered Tailwater Reclamation Crop Crop Consumptive
<br />Year to Agricultural (Acre-Feet) Leaching Leaching Use
<br /> Users (Acre-Feet) (Acre-Feet) J
<br /> (Acre-Feet)
<br /> (Acre-Feet)
<br />1987 2,322,174 387,409 14,538 234,501 1,685,726
<br />1988 2,493,452 418,824 15,709 258,491 1,800,428
<br />1989 2,577,082 435,434 22,772 308,362 1,810,514
<br />1990 2,610,625 438,961 32,244 319,404 1,820,016
<br />1991 2,448,721 409,271 3,165 303,614 1,732,671
<br />1992 2,106,398 352,562 12,584 233,186 1,508,066
<br />1993 2,330,539 391,530 14,105 241,464 1,683,440
<br />1994 2,578,371 433,166 15,000 325,409 1,804,796
<br />Average 2,433,420 408,395 16,265 278,054 1,730,707
<br />
<br />Source: On-Farm Irrigation Efficiency, Boyle Engineering Corporation, August 1993. 1993 and 1994 data
<br />calculated using the Boyle Report water balance approach.
<br />I Crop Consumptive Use and Crop ET are the same in On-Fann Irrigation Efficiency, August 1993, by Boyle
<br />Engineering Corporation and the 1993 and 1994 updated Table, 6-1 September 1995.
<br />
<br />Tailwater numbers have been estimated using the cropping pattern for each year and the average
<br />tail water percentage from a USBR/IID tail water study completed in the mid-1980s. These
<br />numbers assume that tailwater percentages have remained fairly constant over time. Over the
<br />eight year period, estimated tailwater has averaged 16.8 percent of the total volume of water
<br />delivered for agricultural use.
<br />
<br />IILC.2 Current Municipal and Industrial Water Use
<br />The IID provides wholesale water service to seven incorporated and three unincorporated cities
<br />within the Imperial Valley. Each city diverts water from IID's canal system to its treatment
<br />facility prior to distribution for municipal uses. The annual water deliveries and populations of
<br />
<br />Draft: Subject To Revision 12/21/95
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