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<br />which will receive project water are also included in evaluation <br />areas C1 and C2' These tracts will be used in conjunction with <br />presently irrigated lands in existing farm units. Evaluation area <br />C3 comprises large blocks of nonirrigated land which will receive <br />project water and will be used for new farm units with project <br />development. <br /> <br />Wi th Project Condi tions - Evaluation areas C1, ~, and C3 will have <br />the same water supply and productive capaci ty and are combined into <br />evaluation area C in the analysis. <br /> <br />Evaluation Area D <br /> <br />This area is composed of the river valley lands located along the Florida <br />River. Lands in evaluation area D are separated from evaluation areas A, <br />E, and C because of their location and a better water supply. <br /> <br />Soils range from shallow loams over gravel to deep, silty, cl~ loams in- <br />fluenced by shale. Forty percent of the lands have slopes iess than 3 <br />percent, and 90 percent have slopes less than 6 percent. Soils in this <br />evaluation area have been grouped into land capability classes II, III, <br />and IV. <br /> <br />These lands can grow any of the climatically adapted crops. Little increase <br />in crop yields can be expected after project installation since the water <br />supply has been nearly equal to the crop requirements. <br /> <br />Evaluation area D comprises a total of 1,190 acres of project lands, all <br />presently irrigated. <br /> <br />So ils Inventory <br /> <br />Sources of Data <br /> <br />Existing soil surveys of individual farms, made by the Soil Conservation <br />Service, supplied most of the information. In some areas, there was in- <br />adequate soil survey information. Here addi tiona1 so il surveys were made. <br />The soil survey information was supplemented by detailed soil profile <br />descriptions prepared by local soil scientists of the Soil Conservation <br />Service, and analytical data supplied by the Colorado State University <br />Agri cultural Experiment Station and the Cooperative Soil Survey Laboratory <br />at Fort Co 11 ins, Colorado. The Bureau of Reclamation also supplied copies <br />of the land classification field sheets and laboratory data which were <br />useful in the appraisal of project soils. <br /> <br />General Description of Soils and Soil Problems <br /> <br />Project soils are separated into two general groups, the Florida Mesa <br />soils representing about 90 percent and the Florida River valley soils <br />representing about 10 percent of the land in the project. <br /> <br />- 8 - <br />