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~.. . <br />. A <br /> <br />UNITED STATES DEPARTMENT <br />Soil Conservation Service <br />'ection II-E /~ <br />OF AGRICULTURE <br /> <br />RANGE SITE DESCRIPTION <br />. l <br />T~ Gr,,Je . <br />T <br />~y~au~~ usx,~,,c~ rn ,k.,r <br />Cpr , COLORADO FIELD OFFICE / <br />~~~ 6a Site Narne: Mountain Loam 13-18" ~Z ~J~'~ <br />/„~ ~ ~ Needleandthread/Western ~heatyraes PPP <br />Site Number: 048BY###CO <br />Date Approved: month, year <br />A. PHYSICAL CHARACTERISTICS <br />I. Phvsioaraphic Featrir-es <br />This site is on low hills, fans, terraces, and uplands in <br />deep alluvium, colluviurn, or- eolian materials. Elevation <br />ranges from 75UU to S7UU feet (22c^•5U to 2650 meters). <br />._. C:I irnat i c Features <br />a. The climate is arid with precipitation averaging 13 to 1L~ <br />inches (~~5 to 46 centirneter-s). The average monthly <br />precipitation is as follows: <br />,Jars Feb March April May June July Aug Sept Oct Nov Dec <br />.~ .L~ i.-, 2.1 l.rv 1.2 2.5 2.=' 1.3 1.2 .S .7 <br />b. The appr-o,:irnate growing season aver ayes ~5 to 110 days <br />or• fr-arn June 9 to Sept. 1. In average years, there is <br />sufficient rna i sture at the bey i r~r~ i rig o f ttre gr-owi ng season to <br />initiate growth irr such cool-season grasses as western wheat, <br />need I earrdttrr-ead, and butt I ebr-ush squ i r-r•e I to i I . The i r• c~pt i rnurn <br />yr-owing season is early May through July. The warm season <br />grasses, such as blue gr-ama, have ttreir- optimum yrowirrg <br />season fr-orn July through August. About 4Cr percent of the <br />annual precipitation falls in the faun of rain during the <br />frost free season. There are Z days per year that ttre <br />precipitation equals or exceeds 1.0 inches (2.5 cm), arrd 7 <br />days that meets, equals or exceeds U.5 inches (1.3 cm). <br />TI-re aver-age arrr~ual ternperatur-e is 42 deyr-ees F. <6 degrees C) <br />with 1 day higher- than ;rU deyr-ees F (3~ degrees C).and 35 <br />days lower- than U degrees F (-i8 degrees C>. Temperatures <br />fa I I be I ow the fr-eez i rig mar-I:: much of the t irne i n September <br />thr-~~ugh March. TY~e last killing frost may occur as late as <br />June 10. <br />Mountain Loam 13-18" ~~J~O*: 1 <br />