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<br />~~~ UNITED STATES DEPARTMENT bF AGRICULTURE ~~'~'.''--'.• -
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<br />- Solt Eens••-_~~ ion Service Colorado
<br />Technical Guide RANGE SITF IJO: 228
<br />' Section 11 E ~~ Field Office
<br />~: ' ~ .t': August 1975
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<br />- ~ •'RANGE SITE DESCRIPTION
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<br />.•:~'MOUNTAIN LOAN'
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<br />Land Resource Area: Southern Aocky'Mountains (48)~~ '.
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<br />~;~,~1::, "A: 'PHYSICAL CHARACTERISTICS '
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<br />Physio9ra~hie Features
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<br />'r` Topog~ephy i3 matrtly alluvial-colluvial slopes, terraces, ns
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<br />:. < or valley pos(tlons. Slopes average between 5 to 108 but can
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<br />~ '•reach 30 to 406. Elevation ranges from 7000 feet to 9500 feet.
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<br />- Climatic Features
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<br />. • Average annual. precipitation Is l5 to 20~inehes, of which about
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<br />- 50$ 'fa 11 s as snow..,..
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<br />''~~ r;i'::~ Optimum growing season for'.native piarits'is early spring through
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<br />summer. The frost free period.ranges from 30 to 100 days. Mean
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<br />~~~.~~':~.~; - ~-. annual .temperature ranges!from•]0°'s to (-) 40°'s F. This SIfP.
<br /> •normally has 'deep snow cover though the winter.
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<br />,y~'• 3. •Natlvr. (potential) Vegetation ;•;
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<br />~~`+~ Grass~,~~~~in association with minor. amoun'ts~ of woody ~plants~'such as
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<br />, sagebrush and snowberry and several fortis; accounts for most of
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<br />~;~'~~~ ' -'' -~ the vegetative cover, This sitc;is treeless; however, trees are
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<br />~ often in the general vicinlty•:'Dominant grasses are
<br />ldaho and/or
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<br />Arizona fescue, slender wheatgr85s, bearded wheatgrass,-native
<br />•~+.:;.... ,. bluegrasses, nodding brume; mountain brume, Letterman's needlr-
<br />~s''~'' ~ ~~-' ~,".,'k_~: ~, grass and pine needlegrass: Hounta'in muhiy and Parry oatgras
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<br />p' gcron ~, a ,r:~undscl nn~l
<br />are 'important In some Iocet Ions. Lu me,
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<br />~;~.~, bluebells ara the principal'forbs. ldlth range c!e~,lotion, sage-
<br />~n'-:~t - ~ brush often becomes domtnfnt:
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<br />:i-": Optinlllm ground cover Is 35$. The fo{lowtng sp~• '. ~
<br />mnst likely
<br />?c~-~~'~ t~~ ii~v:~~^ ~~•is site: chcatgrass,~~~slimstemmul;!: i. ~•-.'r:.n, blue
<br />~;~'~j ,. gr~u.a, Il,::.,cro-,ced, broom snOkewecd,' call rabL•I,i: .I,n, phlox, and
<br /> rw nailwort.
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