|
<br />PUIlGATOIRE (PICKET WIRE) lUVER,'COLO.
<br />
<br />9"
<br />
<br />s'andy soils. .' Alluvial soils lire found along the stream "alley and
<br />cover only a small portion of tho area, '
<br />11: Vegetal cover.~Vogptative typesulgeneral ate associatedgeo~
<br />graphically with the ~oils groups. In t)ie headwater areas above
<br />tiniber lino, tho steep mountain slopes are devoid of cover. In the
<br />tiniber areas, conifers\ ospen;'andbr\ish 'with 'associated grasses 'ate
<br />found., Iii the wood and zone upstream from the' frolltal range,
<br />pinon, juniper, scrub oal<8, and sagebrush with scattered growths of
<br />bunch grass predominate. 'In the plains regions" short grasses,
<br />gramma, and buffal() grass arc the dominant. species. '
<br />12., Olimate.-Climatic' conditions vary considerably within the
<br />, Purgatoire River Basil\, principally becausc ofthegreat differences in
<br />topography. Owing to thisva\,iation and, to, the, insufficient number
<br />of weather stations within the basin, any attempt to ,present average
<br />willies for climatic factors of the basin would be misleading. Conse-
<br />qupntly, mean values wer,e computed for individual weather stations
<br />to indicate eoilditions in', the' : immediate vicinity of these stations.
<br />Gen,erally, the summers are warm and the winters are moderate with
<br />occasional cold ,waves of short duration., The average monthly 'and
<br />animal temperature~, number of years of record, and the maximum
<br />and 'minimum recorded temperatures at the typical United States
<br />Weather Bureau stations, arc given in table No.3, 'The average
<br />annual humidity at Las Animas, contiguous to the drainage area at the
<br />mouth of the river, varies from 78 percent for the morning observa-
<br />tion to 40 percent for the' afternoo)]. observation. The average annual
<br />precipita,tion, varies from 12,17 inches at Las Animas to 22,10 inches,
<br />."at,1~!lrthLl),ke.
<br />.. ,.', ''''',-- . . ~ ".
<br />
<br />
<br />TABLE No. 3.-Average monthly and annual temperatures and maximum and:
<br />minimum recorded temp.er~ture8
<br />
<br />Station,
<br />
<br />Number of years of record__.o .___...__'__.__._______~_.____"___"__._
<br />A v('!tfl~e temperature degrees Fahrenheit for-
<br />~~t~~~y~~::::~::::::::::::::::::::::::::::::::::::::::~:::::::
<br />March, __..__~_.. _.__ .._~__..u._~_.~____h _.. .-_ .__._........._
<br />f!ii~:::~::::::=::::::~::::::::::::i:::::,~::::::::::::::::::.:::::
<br />:. rJ~~b~~:::::::::~:::::::::.:::: :::::::::::::::::::'::::::::::::
<br />October _........00 ....00._... 00 .o.H_.h..' _00 '.'n'" n. ....00
<br />November .._ .____. _.n"*, n~.' ... 00' ..*.... __ '_.. nO. .... '.. U
<br />. l)eoomber... __~*nn'''''. .*... _.. _ __......*n_... .... n. _'..n
<br />Annt1Rl._.._.~......*.._..*.._..__.__._...*_._.................
<br />Maximum recorded tomperaturo_......_.....~.......__.._...__..._.
<br />M,lnimum recorded tCmpor8tUre.u.....*_...n...~.._.u. ..'''''n'
<br />
<br />1 Rccortls are for OlearvJew j 4 miles northwest of North Lake.
<br />, June and August, .
<br />S July, August, and Soptelllber.
<br />. July,
<br />'December.
<br />
<br />Nortb
<br />I.ake!
<br />
<br />7
<br />25,0
<br />26.4
<br />29.\
<br />34.8
<br />42.6'
<br />51.8
<br />5<.
<br />55.0
<br />49.8
<br />41,4
<br />32.2
<br />25.3
<br />39.0
<br />."
<br />a~19
<br />
<br />Trinidad LnsAnitnas
<br />" 52
<br />33,7 28.7
<br />36,0 31,2
<br />41.9 42.6
<br />49.2 1\2,,2
<br />57.9 61.9
<br />67.3 72,6
<br />71,8 77.0
<br />70.3 74,0
<br />6.'t9 66.8
<br />Rt4 53,9
<br />41.5 40.3
<br />33.5 30.1
<br />51.7 52.6
<br />'99 '114
<br />1-26 1-32
<br />
<br />13. Map8.~The watershed is almost entirely covered by the
<br />quadrangle maps of the United States Geological Survey, Department
<br />of the Interior, which are listed in table No.4,
<br />
|