Gallons in a well

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Gallons in a well

Postby skylark » Tue Nov 15, 2011 4:54 am

I have a cylindrical water well that is three feet in diameter and fifteen feet deep. I need
to know how many gallons it contains in or to chlorinate it at the rate of a quart per thousand gallons.
All I really need is to know how many gallons it contains when full.
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Joined: Tue Nov 15, 2011 4:39 am

Re: Gallons in a well

Postby robertR0931 » Wed Aug 01, 2012 6:20 am

Aliquid gallon is 231 cubic inches. So first you have to convert your height to inches
The formula is:
15x20=300 inches

since diameter = 36 inches:
radius = 1/2 (diameter) = 18 inches
area of bottom of well = (pi)r^2 = (pi)18^2 = 1017.87 square inches
volume = "area of bottom" * height = 1017.87 * 300 = 300,361 cubic inches
# of gals in well = "volume of well"/"volume of 1 gal of water"
# of gals in well = 300361/231 = 1,300.26 gallons

So 1.3 quarts
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