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BOARD00100
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Last modified
8/16/2009 2:44:48 PM
Creation date
10/4/2006 6:31:40 AM
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Board Meetings
Board Meeting Date
5/11/1960
Description
Minutes
Board Meetings - Doc Type
Meeting
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<br />~..,vu <br /> <br />further, as ten, twenty or thirty more years <br />go by, the bottom line on your chart is <br />going to get up about halfway from where it <br />is now and at that point all the arguments <br />about historical flow and the fact that the <br />conservation pool has never gotten up to its <br />limit are going to seem a little'falacious, <br />looking back at them, because by that time <br />the same kind of stream flows that we have <br />had here will be pushing that top line all <br />the time. <br /> <br />I <br /> <br />A second item. that is shown on that <br />chart are these few areas at the bottom <br />where there is a straight line showing no <br />capacity or no storage at all on the bottom. <br />At those periods, the water in the river is <br />flowing through a channel right through the <br />dam; there is no backup; no storage, no de- <br />lay in the flow of the water. At those <br />periods all sediment which comes down in the <br />normal flow of the river is passed right on <br />through the gates and goes right on down- <br />stream and does not add to the eventual total <br />sedimentation of this reservoir. However I if <br />you .added a. 10,000 or 20,000 acre-feet stor- <br />age pool in there I permanently, there is going <br />to be a slowing down, a stilling of the water, <br />and the deposition of sediments during those <br />periods. The net effect of this is going to <br />be an acceleration of the eventual complete <br />sedimentation of John Martin Reservoir, <br /> <br />Turning to the other chart on the reser- <br />voir profiles, I'd like to point out the <br />number of feet on one side is about 70 feet - <br />84 maybe. The number of miles along the <br />bottom is 17. Larry says this does not spread <br />out over a very flat, panlike surface and yet <br />my calculations, if I'm right, show the aver- <br />age fall there to be 5 foot per mile. Now I <br />submit that that is a very flat profile reser- <br />voir and the addition of any amount of sedi- <br />mentation or deposition, even in the amount <br />shown by this chart I means that in order to <br />get the same storage, that is, 10,000 acre- <br />feet, in every year, you are going to have a <br />much larger surface area as the years go by, <br />And I'd like to point out again that this <br />isn't a hundred year or two hundred year pro- <br />position. There has already, in ten years, <br /> <br />I <br />
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