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Table 1 <br />Average Soil Moisture Capacity (inches/inch) <br /> <br />HUC <br />County Average Soil <br />Moisture Capacity <br />(inches/inch) <br />13010001 Mineral 0.1255 <br /> Rio Grande 0.1255 <br />13010002 Saguache 0.1771 <br /> Rio Grande 0.1771 <br /> Alamosa 0.1142 <br /> Costilla 0.1130 <br /> Conej os 0.1073 <br />13010003 Sa uache 0.0770 <br /> Rio Grande 0.0739 <br /> Alamosa 0.0869 <br /> Costilla 0.0869 <br />13010004 Saguache 0.1226 <br />13010005 Cone~os 0.1099 <br />13020101 Costilla 0.0852 <br />Comments and Concerns <br />The procedure described above is the same as that used to determine the available soil <br />moisture capacity GIS theme for the western slope, as part of the CRDSS project. There <br />are two soil map units that are common between the CRDSS basins and the Rio Grande <br />basin. A comparison was made of the two soil map units to verify techniques and to <br />check the consistency between basins. As shown in Table 2, available moisture capacity <br />for the two common layers are within 6 percent but are not exact. This difference can be <br />attributed fact that while each soil unit (Muic~ polygon is composed of approximately the <br />same soil types, the percentages of each soil type vary by polygon. <br />Table 2 <br />Soil Moisture Ca acit Com arison <br />Soil Layer RGDSS Soil <br />Identifier (Muic~ Moisture Capacity CRDSS Soil <br />Moisture Capacity Percent <br />Difference <br />CO112 0.0557 0.0551 1.1 <br />CO411 0.0485 0.0458 5.6 <br />appendC_cropcu.doc C-4 of C-4 June 5, 2000 <br />