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Physical Soil Properties-Georgetown Area, Colorado, Parts of Clear Creek, <br />Gilpin, and Park Counties <br />Soil Physical Properties - Robert Fulton <br />Wind erodibility index is a numerical value indicating the susceptibility of soil to wind <br />erosion, or the tons per acre per year that can be expected to be lost to wind erosion. <br />There is a close correlation between wind erosion and the texture of the surface <br />layer, the size and durability of surface clods, rock fragments, organic matter, and <br />a calcareous reaction. Soil moisture and frozen soil layers also influence wind <br />erosion. <br />Reference: <br />United States Department of Agriculture, Natural Resources Conservation Service. <br />National soil survey handbook, title 43041. (http://soils.usda.gov) <br />U,,? Natural Resources Web Soil Survey 12/28/2010 <br />Conservation Service National Cooperative Soil Survey Page 3 of 6