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Last modified
7/29/2009 10:44:44 PM
Creation date
10/11/2006 11:24:24 PM
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 />-.-e -. <br /> <br />. <br /> <br />..-- <br /> <br />JIi'~""t .... <br />lu.}(.i <br /> <br />Chapter II.--Prejeet lands <br /> <br />The lands in the Eastern Slope preject area extonrl from the uppor <br />roaches of the Arknnsas fdvcr and its tributaries to the Colorado-Kansas <br /> <br />boundary. <br /> <br />This chaptor deals with the desoription of all lands within the <br />E.'1.stern Slope Project area; hcwevor, the Initial Deve1opmont of the proj- <br />ect would bo c0ncernGd only with tho presently irrigated arens described <br />undor the following land classification arons, Loadvi11c to Sa1ida area, <br />Nortlwlost Puob1o aron with spccific roforence to tho subaroas of tho <br />Canon City Listrict. and Pcnroso District, Poob1o tc Holly irrigated <br />aren, nnd Fountain Ri vcr Vo.l1ey. The othor irrigated areas might bo <br />bcnefitod by an exchango of waters (supply petnitting), <br /> <br />GENF1lA.L <br /> <br />Soils <br /> <br />Along tho Arkansas River and most of its tributo.ries the lands <br />occur o.s rivcr bottot:'~(\nd, torraces or benches, nM alluvial f(\ns. <br />The up1nnds are residual soils derived from shale, 1u"estone, or sand- <br />stono oxcart in seme areas where alluvial outwash overlies the residual <br />soil. Tho parent material of mest of the residual soils is the Ogol- <br />lala.fornntion, Pierre shale, Niobrara brouP (Apishapa shale and Tinpas <br />limest0ne), Benton group (Cr.r1ile she.lo, Groenhorn lil~stol1O, and Gran- <br />eros shalo), and the Dakota s(\ndstono. <br /> <br />Clinntic conditions under which the soils devoloped are a normal <br />annual rainfall ranging from 10 to 18 inches, low humidity, cold win- <br />ters, ann wam 'to nonerato1yIio't sunners vn.tli mnny nnys 01ori~lil; sun- <br />Shine. Wind and wnter erOSlc'n have bcen the contributing ageneies re- <br />sponsible for nearly all of the alluvial deposits. Under these condi- <br />tions mostly brown or reddish brown surface soils have developed. <br /> <br />lAnturo or oldor soils which hnve remained in place long enough to <br />develop distinct layors or horizens are found in many parts of the area. <br />Tho principal characteristics of the ~(lture soils are 0. dark-colored <br />leamy topsoil; a subsoil layor containing a higher percentage of pertly <br />solublo minerals, line usually predominating, and with heavier texturc <br />than that of the topsoil. Tho topsoil extends fran tho surface tc a <br /> <br />5 <br />
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