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Last modified
1/26/2010 2:56:56 PM
Creation date
10/12/2006 4:04:47 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8278.400
Description
Title I - Mexican Treaty
Basin
Colorado Mainstem
Date
7/27/1942
Author
Com. Of 14, CRBS
Title
Memoranda In Explanation and Support of Resolution Adopted by the Committee on June 20, 1942, Relating to an Apportionment of the Waters of the Colorado River to Mexico
Water Supply Pro - Doc Type
Publication
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<br />+--~:- <br />, <br /> <br />" <br /> <br />~L;' " <br />'''''",'''' <br />~-j~1' <br />J1w' <br />~:'1(.-.. <br /> <br />Before the advent of man and his attempts to develop <br /> <br />the delta, the River was free to flow as it pleased, and <br /> <br />, , <br /> <br />did from time to time flow, either to the west and north <br /> <br />into Imperial Valley, or to the south into the Gulf. One <br /> <br />of the outstandin~ characteristics of the River is that <br /> <br />in the delta :t t always runs on a ridge. The reason for <br />this is that, the main channel of the River not being <br /> <br />large enough to accooonodate the floods, the River over- <br /> <br />flows its banks during the flood season to a depth of <br /> <br />from a few inches to soveral feet, the overflow depositing <br /> <br />the coarser silt close to the River channel and the finer <br /> <br /><. <br /> <br />", <br /> <br />silt at varylno; distances beyond the channel. Thus the <br />River gradually builds u.p .its bed and. banks until a <br />height is reached such that it becomes unstable and one <br /> <br />of the many side channels develops to a size sufficient <br />to divert the entire flow. During the past ages, in this <br /> <br />manner, the entire delta region was built up of silt to <br /> <br />great depths. <br /> <br />Protective Levee ~yst~ <br /> <br />Although development of Imperial Valley in California <br />and Mexicali Valley in Mexico commenced in 1901, fo:!:, <br /> <br />f <br />,., <br /> <br />several years thereafter some overflow during flood <br />seasons continued to reach the Salton Sea. From 1905 to <br /> <br />1907 the entire flow of the River poured through a break <br /> <br />- 6 .. <br />
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