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Contents <br />Preface....................................................................................................................2 <br />How Soil Surveys Are Made..................................................................................5 <br />Soil Map..................................................................................................................8 <br />Soil Map................................................................................................................9 <br />Legend................................................................................................................10 <br />Map Unit Legend................................................................................................11 <br />Map Unit Descriptions.........................................................................................11 <br />Weld County, Colorado, Southern Part...........................................................13 <br />1—Altvan loam, 0 to 1 percent slopes.........................................................13 <br />3—Aquolls and Aquents, gravelly substratum.............................................14 <br />10—Ellicott-Ellicott sandy-skeletal complex, 0 to 3 percent slopes, <br />rarely flooded........................................................................................16 <br />13—Cascajo gravelly sandy loam, 5 to 20 percent slopes..........................18 <br />27—Heldt silty clay, 1 to 3 percent slopes...................................................19 <br />41—Nunn clay loam, 0 to 1 percent slopes.................................................20 <br />47—Olney fine sandy loam, 1 to 3 percent slopes......................................21 <br />51—Otero sandy loam, 1 to 3 percent slopes.............................................23 <br />85—Water...................................................................................................24 <br />Soil Information for All Uses...............................................................................25 <br />Suitabilities and Limitations for Use....................................................................25 <br />Land Classifications........................................................................................25 <br />Ecological Classification Name: NRCS Rangeland Site (Cogburn Area <br />Soils).....................................................................................................25 <br />Farmland Classification (Cogburn Area Soils)............................................28 <br />Ecological Sites..................................................................................................34 <br />All Ecological Sites — (Cogburn Area Soils)..................................................34 <br />Map—Dominant Ecological Site (Cogburn Area Soils)...............................35 <br />Legend—Dominant Ecological Site (Cogburn Area Soils)..........................36 <br />Table—Ecological Sites by Map Unit Component (Cogburn Area Soils)....37 <br />References............................................................................................................39 <br />4