Lake James Topics: Rainfall to Raise Lake 1 Foot
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Name:
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Maverick
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Subject:
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Rainfall to Raise Lake 1 Foot
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Date:
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1/31/2008 12:31:09 PM
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OK now that I have figured out that to raise the lake 1 foot we need approx 17,000 cfs. What does this equate to in terms of rain fall amounts?
I think the following calculations are correct, however any engineers out there which want to check my numbers feel free.
Assuming it rained ONLY over the 44,000 acres of Lake Martin AND there were NO other inflows or outflows the number would be 9.20 inches of rain to raise the lake 1 foot.
But we all know the above is not true as there are inflows from the upper Tallapoosa and outflows downstream, but it does put it to perspective that we need a lot of rain / inflows to fill the lake.
Some other interesting facts, to put his further into perspective.
Gallons of water over 44,000 acres in 1 inch of rain - 1.194 billion
Gallons of water in 17,000 CFS - 10.988 billion
(10,988,120,000.00 divided by 1,194,788,654.40 = 9.20)
12 ounces beers to raise Lake Martin 1 foot - 117.2 billion
Anyone know the total acreage of the Tallapoosa Basin ABOVE Lake Martin and BELOW Wedowee? Then we could calc the average rainfall required within the this geographical area to raise Lake Martin 1 foot. Sure it is probably about half of the 9.20 inches. But would be easy to calc know that I have the Exel spreadsheet set up.
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