Laserfiche WebLink
• <br />16 Youga-Cateview complex, 3 to 25 percent slopes <br />BRIEF MAP UNIT DESCRIPTION <br />This unit occurs on gently to moderately sloping alluvial fans and terraces. <br />The main plant association is Arizona fescue/mountain muhly on both soils. <br />Elevation ranges from 8,500 to 10,000 feet above sea level. The average annual <br />pre~~ipitation is about 17 to 20 inches. <br />COMI?OSITION AND INCLUSIONS <br />This map unit is about 40 percent Youga soil on gentle slopes, and 35 percent <br />Gatc~view soil on steeper sloping tceslopes that receive slopewash materials. <br />The soil components of this unit are so intermingled that it was not practical <br />to map them separately at the map scale used, Also in this unit is about 10 <br />percent Cabin soil. Included in this unit are areas of rock outcrop and shallow <br />soils near rock outcrop. lncluded areas make up about 15 percent of this unit. <br />SOILS <br />The Youga soil is deep and well drained. It formed in glacial till and outwash <br />of volcanic origin. Typically, the surface layer is black loam about 5 inches <br />thick. The subsurface layer is very dark brown clay loam 5 inches thick. The <br />subsoil is dark yellowish brown clay loam 13 inches thick. The upper 5 inches <br />of the substratum is dark yellowish brown sandy loam. The lower part of the <br />substratum is dark yellowish brown very gravelly sandy loam that extends to 60 <br />inch?s or more. <br />Perm:ability of the Youga soil is moderately slow. Available water capacity i.ti <br />medium. Effective rooting depth is 60 inches or more. Runoff is moderate and <br />the water erosion hazard is moderate. <br />The C~ateview soil is deep and well drained. It Formed in glacial till and <br />outwEish. Typically, the surface layer is very dark brown cobbly loam about 13 <br />inchE~s thick. The substratum is dark brown extremely cobbly sandy loam that <br />extends to 60 inches or more, <br />Permeability of the Gateview soil is rapid. Available water capacity is low. <br />Effective rooting depth is 60 inches or more. Runoff is moderate and the water <br />1 erosion hazard is moderate. <br />1 POTENTIAL NATURAL VEGETATION <br />The main plant association on both soils is Arizona fescue/mountain muhly. <br />Other plants in this association are Fringed brome, needlegrass, blue grams, <br />- prairie junegrass, bottlebrush squirreltail, bluegrass, fringed sage, mountain <br />muhly, pussy toes, sad rebbitbrush. <br />1 PRESENT VEGETATION <br />Hlue F;rama dominates some sites in this unit. <br />~cFi. ~ <br />1 <br />(~o~~j' <br />U <br />~~, v <br />o--~.~p~ <br />~~~ roe <br />,CC. ~, r <br />~Q,,,,'z,. yr eJi-~CA <br />-Qif 01..` .i ~~`.:7~a <br />170 ' <br />~~•y cl.y~ .,k . ' • '^~ <br />_~<<-x ...~. <br />o.w'.: <br />~~y~~7~ <br />~i~?~d"0 --~'.~U <br />