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WSP06316
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Last modified
7/29/2009 10:15:04 PM
Creation date
10/12/2006 1:33:29 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8147
Description
Gunnison-Arkansas Project
State
CO
Water Division
4
Date
6/1/1948
Author
US DoI BoR
Title
Interim Report Gunnison-Arkansas Project Colorado Appendix E Irrigation
Water Supply Pro - Doc Type
Report/Study
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<br />. <br /> <br />1639 <br /> <br />(Project lands) <br /> <br />The permeability and absorption of water of the sandy soils is much <br />more rapid than that of the heavier soils, but the sandy soils hold less <br />water. Heavy soils, on the other hand. take water more slowly but hold <br />more of it. Very hea~J soils hold water so tenaoiously that much of it <br />is not readily available to plants. Where optimum conditions in respeot <br />to permeability and water holding oapacity are not naturally present, <br />they can be improved by careful soil and irrigation manageJTlBnt. <br /> <br />The number of irrigattona and the amount of water applied at eaoh <br />irrigat;,on in the urea varies with the Mnnal climatic conditiolll!l; tl:{l~,te;:- <br />terture, structure, and c,Gpth of soil; oharaoter of the subsoil; MV1'e- <br />quireinents of oraI' to be irrigated. From a series of reoords and other <br />observc.tions made in the Upper Arla;,nsC\s River Basin by the Colorado <br />Agrioultural and Meohc.n~oal College, it was found that the req~ired <br />llIIIount of. wc,ter~PI'Ued_c.t.eao_h"ir:r:iga tion..should=-~.y:fJ;61iF3=to 6~a'Or~~ <br />- -.' -= -, . .~:.- -:inclie,{ ,,1' .w-~t.er -pi>rc:acr:e~dep~irling=up_OJl.;tJ:1,,::d~pj;li,,-of=.r.09ot=p'ene,tr!ltiOll--'~~ <br />- ~ --:;:.-~-==-::-. ~of=di1'fer.ent cj>:ops=OJl<i=c.th'e'ffequ~ncy '''-rii'rI gati'~n.c.~!:rc~e;o, tl.'~~a:t-., <br />::~.'--_. - -=-~. ~s.~s z:~o.amren(L tl1o.:t.the'.number:"6! 'i:rt:.ig,,-ti'.;jns-=-applTecr--t~~r:oPS;;gJ;ow~Jin.-:- <br />I-c-~ '.-=- ~'-': ' . ~ ,the ar.~~:-cshould:1i_o- o,:s.:fi>l'lows:,-aniilfa4:-t:o.-=-5.=sugar' bee,ts:':5.;.t~o~6... ' <br />'. ,- -- '. ':=. _: ;:::corn-'3 to--:4,:=:-~;;;;;'11 grain:' o.nd s"-rghums 1 to. 3~-a:-nd-=-dry beans'"4'='to=6. . <br />---, :.... . Special truck orops such as dry onions, tOlllD.toos, oantc.loupes, and cu- <br />. cumbers require frequent irrigations and the number applied to these <br />crops vnries from 4 to 10 or more. <br /> <br />I <br /> <br />Under present conditions of an inndequate Wc.ter supply the kind of <br />crops grown using those recomQendations is limited to lands under a few <br />ditches having an c.dequate c.nd timely water supply. <br /> <br />Topol!:rnphy <br /> <br />The Eastern Slope area lies in the Great Plains rogion and slopes <br />from the foot of the Rocky Hountains eQstwarn. beyond the limits of the <br />aren. The elevation at Salida is 7.050 feet. at Canon City 5,343 feet, <br />at Pueblo 4,708 feet, and ~t Holly near the Colorndo-Kans~s State line <br />3,385 feet. <br /> <br />Into this sloping plain the Arknnsas River has cut a troad but rel- <br />atively shallow valley, terminating on the west in steep mountain <br />slopes. This valley is bordered b:,' steep roeky bluffs, high mesas. <br />and terrace slopes in the upper part; by slopes of lower-lying mesas, <br />hills, law river blUffs, and terraoes in the oentral part; nnd by more <br />nearly level plains undulating only slightly and lying higher than the <br />river valley in tho lower part. The uplands in the oontral and lowor <br />.____. __ part of the area ~lop" ,!:ovro.r~.tbeu:.iv:or~exeep:t.whoI"etri'butnries -entor _.. _ n_ <br /> <br />8 <br />
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