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Mesa Reservoir enlargement and has stopped progress on the enlargement. <br /> Table 3 summarizes the results of the 18 years operation study. <br /> • The left hand portion of the upper section of Table 3 lists pertinent data inputted to the <br /> model. The right hand portion of the upper section is the 18 year summary of operations. <br /> The Average Red Mesa Res. Supply is the total average supply from the reservoir <br /> available for irrigation and domestic usage after reservoir evaporation. <br /> • The middle section of the table lists important information for each year of the study <br /> period. Such as minimum and maximum reservoir capacity, amount spilled, and the <br /> irrigation supply. The amount of water diverted under direct flow water rights is shown <br /> as "Freed, Revival, Vossberg Divr" which is for 1,600 acres; the row "Direct Diversion <br /> for 1,140 acres" shows the estimated portion of the total direct diversion that was used for <br /> the 1,140 acres served from Red Mesa Reservoir. The sum of "Direct Diversion for <br /> 1,140 acres" and "Reservoir 1140 acre Supply" is the total irrigation water available and <br /> is shown in the row titled "Total 1140 Acre Supply". The percent of the required amount <br /> of water (4,264 acre-feet to provide a full supply of water to the 1,140 acres.) to actual <br /> supply is shown in the lowest row"% of Irrig Supply to Demand". <br /> • The lower portion of the table shows the derivation of the ideal irrigation demand of 4264 <br /> acre-feet for the 1140 acres. The first row is the monthly consumptive use for alfalfa. <br /> The second row is the total of the bottom two rows. The "Gravity" row is the irrigation <br /> demand for 500 acres served from Red Mesa Reservoir for gravity irrigation with a 40% <br /> efficiency. The "Sprinkler" row is the irrigation demand for 640 acres of sprinkler <br /> irrigation. <br /> This table summarizes a significant amount of data used to evaluate the hydrologic feasibility of <br /> enlarging Red Mesa Reservoir; the most critical components are described below. <br /> The bottom row of the middle section, "% of Irrig Supply to Demand" shows the percentage <br /> irrigation supply to 1140 acres versus the ideal demand. As can be seen, there is a full supply or <br /> nearly so, in every year but 1977 and 1990, the average supply is 88% (including 283 acre-feet <br /> of evaporation). The operation study showed that in the 18 year period there is adequate water to <br /> fill the enlarged reservoir in 12 years, in 4 years the reservoir would store over 3100 acre-feet, <br /> and in two years the existing reservoir would have been adequate to store the available flow. <br /> 16 <br />