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' • •~ <br />f USDA, Soil Conservation Service <br />Section II-E <br />UNITED STATES DEPARTMENT OF AGRICULTURE <br />SOIL CONSERVATION SERVICE <br />' /~~~~/~.y.~ - ,COLORADO FIBLU OPFICE <br />Shallow Foothill !1204 <br />Bco Site Description <br />p f / 1NLRA 49A and 49B <br />~w.rt,,..is- ~ae~ Qca..~t..io~ Go..~/e,~-~ July 1984 <br />/sio~s <br />A. PHYSICAL CHARACTERISTICS <br />I. Ph!ysiographic Features <br />Topography is ridges, hog-bucks, mesas, and steep slopes. Slope is <br />af~ten east facing bat can be in any direction. Slope varies from <br />nearly level to 45 percent. Elevation ranges from 5,200 to 7,000 <br />feast (1,585 to 2,234 meters). <br />?. Climatic Features <br />a. Precipitation averages 13 to 17 inches (35-43 cm) annually t+ith <br />fluctuations from year to year. From 65 to 70 percent of the <br />precipitation is received between Hay and October. <br />A typical average precipitation pattern follows: <br />Jan Feb !!arch April May June July Aug Sept Oct Nov Diec <br />.4Z .S8 .92 1.64 2.I4 1.82 Z.41 2.16 I.46 .94 .64 .48 <br />b. Average annual temperature is approximately 49° F (9.4° c). <br />Length of the frost free period averages 120 to 150 days and <br />occurs From the middle of May till the end of September. High <br />intensity summer storms followed by hot dry periods ate common. <br />3. Native (Climax Potential) Vegetation <br />a. The potential plant community is about 70 to 80 percent grasses, <br />10 to 70 percent (orbs, and I5 to 30 percent shrubs and trees. <br />This site gives a browse type vegetation appearance. True <br />Mountain mahogany, big bluestem, Tittle bluestem, sideoats <br />grama, yellow Indiangrass, and Griffith wheatgrass are the <br />dominant plants in the potential plant community. <br />Needleandthread, mountain mutely, Sandberg bluegrass., blue grama, <br />Jluegrass, and Indian ricegrass are also present. Numerous <br />!orbs and other shrubs are present in small amounts. Pinyon <br />pine, Rocky Mountain Juniper, and ponderosa pine are also found <br />on this site in small areounts. <br />P ~ `~ <br />