WSPC02842 - Laserfiche WebLink

Home Browse Search

'''J 7 '. An 800,000 acre-foot reservoir, with Weminuche Pass trans- mountain diversion, nlso will take care of all the short- ages for such a period as 1890 to 1938, with the exception of the years noted. This is shown on Drawing SLV-7 Revised. Not only would the reservoir have taken care of the 670,000 acre-foot re~uirement throughout the 49-year period, 1890 to 1938, with tho exceptions noted, but a mean annual spill of 72,000 acre-feet wcru1d havo occurred. All ef the spills except one would have occurred during the period 1907 to 1930, inclusive. During this 24-year period the spills would hn.ve averaged ll.6,oOO acre-feet per annum. In several years the spills would have nmounted to over 200,000 acre- feet and in two yenrs they would ~~ve exceedod 300,000 acre- feet. " The ~uestion has been asked, would it not be practicable to increase the use of ~Tater to oliminnte the spills? For example, could not the draft during a 24-year period such as 1907 to 1930 be increased to around 800,000 acre-feet? Storage capacity of about 1,500,000 acre-feet would be re- ~uired to regulate the water supply in such a way as. to make it all usable in e~uc.l annunl amounts. The provision of such capacity would not be econo~ical. However, with the project as proposed, the annual draft during such a period as 1907 to 1930 could be materially greater than 670.000 ncre-feet. However, if the use of water were in- creased materinlly during "uc~~eriod, a development would be created for which there would be no water during such periods as 1896 to 1904, rotd 1930 to 1939. The operation of the reservoir in this mannor, using the water which otherwise would spill for the irrigation of land and the raising of crops, would make for unsound development. Therefore. it appears that if the draft between Del Norte and Alamosa is limited to 670,000 acre-feet per year, the project will result in the placing of the entire develop- ment along the Rio Grande on a very sound basis, so far as water supply is concerned. " o The ~uestion has been asked - whl'1.t does the providing of 670,000 acre-feet of water per annum for div8rsion mean? Does. it mean only regulating the water which is being used at the present time or does it mean making available "ne>, water," and if so, how much "ne~r water?" , Under the proposed plan, diversions from Del Norte to Alamosa for such a period as 1915 to 1938 will be in- creased by an average of 131,000 acre-feet per annum. For such a period. as 1928 to 1938, diversions will be In- 1773