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~. <br />' ~YI UNITED STATES DEPARTMENT OF AGRICULTURE <br />Soil Conservation Service, Colorado <br />Technical Guide <br />Section I1 E <br />RANGE SITE N0. 3~7 <br />CE.vrE.Q F1 Id Office <br />RANGE SITE DESCRIPTION <br />for <br />FOOTHILL LOAM <br />Land Resource Area: High Intermountain Valleys (51) <br />A. PHYSICAL CHARACTERISTICS <br />~slographic Features <br />This site occupies gently to moderately sloping fans and <br />(n the pinyon-Juniper zone. Nuch of It is In posit(on tc <br />water that runs off steeper land. Most of It Is dry, the <br />except temporarily. A few spots are grading toward meadc <br />The site may tongue out below Its normal elevation where <br />Is occasional overflow. Slopes are mostly 0 to 6$, althc <br />are steeper. Slope Is not significant to plant growth. <br />are about 8000 to 8500 feet. <br />2. Clima[Ic Features <br />Average annual precipitation Is 10 to 14 Inches. Of this <br />half falls between May 1 and September 1, mostly as hard, <br />thundershowers In July and August. May and June are norm <br />Wide seasonal and yearly variations are cortmon. MaJor na <br />make most of their growth between early May and mid-July, <br />growth may continue through most of the summer, and there <br />late regrowth of some early-maturing plants. <br />Mean annual temperature is 40° to 43° F. Average frost- <br />is 80 to 103 days, from late Hay to early June to Septeml <br />daytime temperatures are frequently In the low 80°js, bu <br />exceed 90° F, and nights are cool. Temperatures of -20° <br />cart be expected each year and are common some winters. I <br />site are slightly warmer, [hough than lower valley land I <br />air drainage. Winds that often reach high velocities arv <br />especially In spring. Relative humidity Is often low. I <br />poration rates average lower than those of many dry reglc <br />of the cooler climate. There is usually more snow than <br />vatlons, and snow is usually present during the coldest ~ <br />ever, snow cover Is Ilght through much of some winters. <br />ra 1 1 eys <br />receive <br />.,.., <br />r sites. <br />:here <br />igh some <br />:levatlons <br />more than <br />spotty, <br />ally dry. <br />tlve plants <br />although <br />may be <br />ee period <br />r. Summer <br />rarely <br />o -30° F <br />r[s of the <br />cause of <br />common , <br />en so, eve- <br />s because <br />lower ele- <br />ather. How- <br />i <br />t <br />f <br />F <br />ti <br />, <br />i <br /> <br />