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<br />r" 999 I
<br />'~„~~.~_. UNITED STATES DEPARTidEid'f OF AGRICULTURE "'
<br />-.Soil Conservation Ser~iic.~, Colorado i
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<br />Technical Guide. I't.iGE .i~TE i.0. 2:;~i / ,~
<br />Section II E ~ field Gi`i''ice ~<<
<br />. .. ... .... February '1977_
<br />-''*~,tt°: - 'RANGE SITE DESCRIPTIONS" .. -., .: "s.',".:.:....:," Q i
<br />for _ _._- r-rcn~.o!nT .~c,~~~7.i-avg...: !,
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<br />......: ~~ I -• 'Sec. 3~ =/~5-73c~ ,
<br />SHAL1.0;~! LC11~1 ...: ;
<br />Land Resource Area: South2r~n Rocky Mo+mtains.('4B} ~~
<br />A. PHYSICAL CHARF~C'fERISiJ.CS
<br />. 1. Physiographic Features
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<br />~' ; Much of this site is on steep mountainous terrain, mostly.on
<br />- south and west exposures, with sl.opes.up to 40%. `It•also occltrs
<br />on rollinn auty:asf~ fan, stream terraces, znd old lava flows wi:b
<br />r gentle to moderate slopes. E',avations range from 6,000 to 9,5i0 I
<br />feet, but may be: higher e.^ io!~zr in special. situa~tons. I
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<br />2. Clinratic Features - =; ~: fI
<br />" Average annual precipitation varies from 15 to ~20 indhes;•but ytay
<br />be as low as 12 i,rrches if all other grout actors are avorab'le.
<br />• ;~,: ;;~; _,.~ _ About 50ry of thi ~ cc~m~s between t•ta;~ 1 and September .30. Hard; ,
<br />`.°~ spotty rains are Common in Jury and August, while June is generally
<br />lacking in moisture. The optimum growing season-.for the .major,.. '.
<br />'- native plants is play 15 to August l5.'. '. ` ,..
<br />:j,;;~3:.Native (poi:ential~Vegetatibn .. •.. .. ... _;'.", :- ~"; ~, - ;'...
<br />Bunchgrasses give t;tis site a grassland aspect. -Ttte dominant ~ J
<br />grasses are Ari<:^r,a fescue, mo~;ntain muhiy, June grass, Parry
<br />oatgrass and pine !:r•opseed. Ot;her.gr•asses that may. occur are a,est-
<br />ern vrheatgra,s, nL"=ding biome, sruirrel tail, needlegrasses; native
<br />' bluegrass!;s, sheep ~_cce; bluo grams, and sedges. 'Common forb~ ~~
<br />found in ti!e pla t co;~,~nunity ir,cl~.!de yarrow, lupinz, pentste!~rou, ~ I
<br />American Y^iCJt, Gnlre!1 7B%~, bJi;;;Yl,^^,61t, and bluebell. Shrubs suet I
<br />mountain mahr;c.zr: sno!•:~ert••~ skunkbrush currant and ~ooseber•r~ '
<br />lnay ap;%ear as sc;!:t~red and i.~oiated `plants, especially. on'al;i, !
<br />shallots rocky areas. !!~
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