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Last modified
1/26/2010 12:32:16 PM
Creation date
10/11/2006 10:36:52 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8141.400
Description
Fryingpan-Arkansas Project - Reports
State
CO
Basin
Arkansas
Water Division
5
Date
12/1/1962
Author
US DoI BoR
Title
Ruedi-Western Slope Investigations Colorado
Water Supply Pro - Doc Type
Report/Study
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<br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />Ii""; ." ~.\ t) <br />t..,"lv'":''' <br /> <br /> <br />JAGiu'T PROJECT <br /> <br />PROJECT LANDS <br /> <br />Alkalinit;v ,md Salinity <br /> <br />Project soils as a rule contaIn only slight amounts of soluble salts. <br />No lWlds were excluded from the irrigable area because of excessive salt. <br />The toxic effects of salinity and alkalinity are not anticipated to <br />increase with full irrigation development. <br /> <br />Land Classi fication <br />"'--- <br /> <br />Lands in the project area were classified to reconnaissance standards <br />in 1951. A field review made in 1961 indice,ted the 1951 classification <br />1ms adequate for the present reconna.issance report with modifications <br />later explained. On the basis of soils, topography, and drainage condi- <br />tions existing in the area, four land classes were established aryd are <br />described belo;T. <br /> <br />Class l--Lands hIghly suite,ble for irrigation farming. The soils <br />consist of medium-textured reddish-brown loams to clay loams that exceed <br />5 feet in depth. The lands have moderate organi c content and a well <br />developed subangular blocky structure, high water-holding capacity, <br />moderate permeability, end low alkalinity and sal:tnity. Moderate lime <br />accumula.tions are found below 2q inches. Class 1 lands have sloues of <br />from 2 to 4 percent in one general direction and irrigation run; of <br />500 feet or more. <br /> <br />Class 2--Lands moderately suitable for irrigation farming. They <br />have the same range of soil characteristics as class 1 lands. Class 2 <br />landS, however, have steeper, more undulating topography with slopes <br />ranging from 4 to 8 percent and irrigation runs of 300 feet or more in <br />one general direction. <br /> <br />Class 3---L812ds less desirable for irrigation farming tha!} c1e,ss 2 <br />lands. They have the same range of soil characteristics as cla.ss 2 <br />lands, but they have rough unduhltine; to)!ography with slopes rane;ing <br />from 8 to 12 percent and irrigation runs of 150 feet or more in one <br />general direction. Some areas of class 3 lands have small amounts of <br />basaltic rock within the 5-foot prOfile. <br /> <br />Class 4P--I,ands that are limited to the production of pasture and <br />hay because of steep slopes, short irrigation runs, shallow depths, <br />basaltic rock, and vegetative cover. <br /> <br />Class 6--Lands perm~~ent]y nonarable, <br /> <br />In the 1951 reconnaissance land classification arable lands were <br />classif1ed as either class 1. 2. or 4p. A subsequent review of the 1951 <br />classification, including spot checking in the field under criteria <br /> <br />19 <br />
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