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Table 14 <br />Estimated Average Consumptive Use by Wetland Category (feet per year) <br />Wetland <br />Category Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Tot <br />Lake .06 .07 .OS .41 .54 .60 .51 .41 .35 .02 .06 .06 3.14 <br />Phreatophytes .00 .00 .00 .19 .27 .41 .36 .28 .19 .08 .O1 .00 1.79 <br />Hydrophytes* .06 .07 .OS .41 .28 .90 .88 .59 .28 .10 .09 .06 3.77 <br />Source: San Luis Valley Water Resource Investigation Final Report, Leonard Rice Engineers, 1990 <br />* Hydrophytes are likely to be inundated with water outside the growing season, therefore the consumptive <br />rate during those months is equivalent to the estimated net evaporation rate. <br />2. Prepare Data for StateCU <br />The average monthly consumptive use rates for lake evaporation were multiplied by the <br />open water acreage to determine the losses due to evaporation. The average monthly <br />consumptive use rates for hydrophytes were multiplied by the acreage identified as <br />hydrophytes to determine their likely use of supplied surface or ground water. <br />The average monthly consumptive use rates for phreatophytes were multiplied by the <br />acreage for deciduous trees, non-irrigated meadows, and heavy vegetation. These <br />RGDSS vegetation classifications represent cottonwood and other deciduous trees, salt <br />grass, greasewood, and rabbitbrush -vegetation types used in the phreatophyte <br />consumptive use estimate prepared by Blaney. <br />The three separate wildlife category estimates of consumptive use were added together to <br />estimate the consumptive use of wetlands supplied with surface or ground water for each <br />wildlife area. As shown in Table 15, the total annual consumptive use for wildlife <br />categories is 23,780 acre-feet per year. The total annual consumptive use at Wildlife <br />Areas when irrigated lands are included is also shown in Table 15 (46,510 acre-feet per <br />year). <br />Table 15 <br />Total Annual Wetland and Overall Consumptive Use Estimates (acre-feet) <br /> <br />Wildlife Area Total Annual Wetland <br />Consum tive Use Estimates* Average Annual Wildlife Area <br />Consum tive Use Estimates ** <br />Alamosa 5,560 15,830 <br />Monte Vista 5,800 16,880 <br />Russell Lakes 5,290 5,800 <br />Rio Grande 630 1,500 <br />Blanca 6,500 6,500 <br />Total 23,780 46,510 <br />*Consumptive use for irrigated crop lands in the wildlife areas is included in the crop <br />consumptive use category. <br />**Includes avera e (1991-1995) irri ated cro Consum tive use. <br />C:\Documents and Settings\ckf.DWR\My Documents\AppendA_culoss.doc Septei~bd162o'~~099 <br />