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Last modified
1/26/2010 2:29:56 PM
Creation date
10/12/2006 2:44:36 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8276.855
Description
Grand Valley Unit - Colorado River Basin Salinity Project
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
2/1/1974
Title
The Grand Valley - An Environmental Challenge
Water Supply Pro - Doc Type
Publication
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<br />Q <br />N <br />~ <br />N <br />o <br />o <br /> <br /> <br />Necessary for the solution of any problem <br />is its understanding. Several years ago, wise <br />men in Grand Valley recognized the problem, <br />and sought to trace it to its source. <br /> <br />They soon found that the problem <br />stemmed primarily from heavy irrigation <br />of the rich soils of the valley. Directly, too <br />much water applied to the soil has two <br />effects; it leaches salt out of the Mancos <br />shale that underlies the good soil, and <br />through the many secret little waterways that <br />lie deep under the surface returns it directly <br />to the river. But there is another more <br />immediate concern. The fruitful soils of the <br />valley are generally heavy, clayey soils that <br />hold water for some time. As more and more <br />water is added, these soils become saturated <br />- the water table rises, and continues <br />to rise, carrying with it the salt from below. <br /> <br /> <br />8 <br />
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