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<br />The projected increase in total water demand for the study area is estimated to range from 23,400 to over <br />41,000 acre feet by the year 2020 (Table 5.2). By 2045, municipal water demands are estimated to <br />increase by approximately 52,000 to 96,000 acre feet. The great~~' '. """se in water dem"nd will occur <br />during the summer months, coincident with lawn irrigation. An example of the monthly dis ,,:Cjution of the <br />increased water demand for each primary watershed in the study area is illustrated in Attac' '3nt 2. <br /> <br />Increases in consumptive water use will be significantly less. As outlined on Table :;.3, estimated <br />increases in consumptive water use range from about 6,200 to 11,000 acre feet per year by 2020. By <br />2045, increase in municipal consumptive water use are estimated to range from 13,800 acre feet to over <br />25,000 acre feet. As with total water demands, the greatest increases in municipal consumptive water use <br />will occur during the summer months. <br /> <br />A significant portion of the projected increase of both population and water use occurs below Dotsero in <br />the Mesa County area. Water use projections for this region rely heavily on historic water use data of the <br />Ute Water Conservancy District. Most of the residential users supplied by the district receive irrigation <br />water from one of the irrigation projects in the Grand Valley. As a result, irrigation season increases in <br />water use are not as large for the Ute Distriel as is the increase that occurs in other areas. If future water <br />users in the Grand Valley area utilize domestic water supply systems for significant irrigation use, water <br />demands will likely be greater than estimated in this report. <br /> <br />17 <br />