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Last modified
1/26/2010 2:57:30 PM
Creation date
10/12/2006 4:09:44 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8200.776
Description
Uncompahgre River General
State
CO
Basin
Gunnison
Water Division
4
Date
7/1/1943
Author
John R Erickson
Title
Consumptive Use of Irrigation Water in Lower Uncompahgre Valley
Water Supply Pro - Doc Type
Report/Study
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<br />0Q1!37 <br /> <br />-18- <br /> <br />ultimate diversion average without the aid of additional water or regu- <br />lation). AlthouGh the average of the principal oanals for the 19 years <br />vtas 380,000 A.F. per year, this indicates that normal diversions withoutt <br />regulation would average about 490,000 A.F. per year. <br /> <br />If the years 1938-41 are indicative of the amount of water Tay- <br />lor Park Reservoir will make available to the Project, then, there should <br />be added to the 19-year average an additional 50,000 to 60,000 A.F. to <br />arrive at an estimate of the present and future average diversions in the <br />area. The total average diversion will then be in the IIU1.Glitude of 540.000 <br />A.F. per year or Bamething over 7.0 A.F. per aore of irrigated land. <br /> <br />15. Drai nage I <br /> <br />Due to the quality of the Boils and the rather heavy diversion <br />of water, the lower valley area has been faoed with a drainage problem <br />sinoe the beginning of the projeot, and even before that to a minor de- <br />gree. The original topographic maps of the projeot area, made in 1903-04. <br />show a seeped area of approximately 1,000 aores. In 1915-16 the Bureau <br />of Reclamation made a survey of the projeot to determine the extent of 'L <br />seeped land. At that time it was found that 16,250 aores had beoome seep- j <br />ed. This vas eight years after operation of the projeot had oommenoed. <br />When the recent land survey was made. it was found that there VIas still l <br />15,815 aores of seeped lands. This last figure does not inolude the land ) <br />classed by that survey as "oropped land-seeped", ~ich amounts to another <br />14,180 acres. <br /> <br />A l1"aphic portrayal of the present oonditions and changes of <br />seeped areas sinoe 1916 oan be obtained by referenoe to the aooompanying <br />maps (Plates IV and V). Plate IV indicates the approximate looation andd <br />extent of lands oropped-normal (irrigated), oropped-seeped and seeped as <br />determined during the 1938-41 investigations; and the locntion of the <br />newly construoted drains in relation to these lands. <br /> <br />A comparison of the 1915-16 seeped area survey made by the Re- <br />clamation Bureau with the present sto.tus of those same areas offers an <br />interesting study in the change that oan take place in land use over a <br />period of years. Plate V shows only the areas that were seeped in 1916 <br />and the status of those areas at the present time (l940). <br />
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