how manny gallons of water to cover 1 acre?

Question

give formula

1 inch deep

Answer 1

1 acre = 43 560 square feet
1 US gallon = 231 cubic inches

let us estimate that the water will be spred .5 inches deep
a rectangle .5 * 21 * 21 = 220.5 cubic inches
so each gallon would cover about 21 square inches .5 inches deep.

(43 560 (square feet)) / (21 (square inches)) = 298 697 or almost 300,000 gallons.

Answer 2

It depends upon the depth to which it would be covered. The formula is volume=area*depth, and the rest is unit conversion. Let's use feet as a reasonable measurement- 1.00000 Gallons (US) = 0.13368 Cubic Ft (search yahoo 'cubic feet in gallon') and 1.00000 Acre = 43560.00000 Square Feet, so you'll end up with
volume (in gallons) = volume (in cubic feet)/0.13368=area(in square feet)*depth(in feet)/0.13368=area(in acres)*43560*depth(in feet)/0.13368
giving, finally, volume in gallons = 325853[gallons/acre*feet]* 1[acre]* depth[feet].

If you're wondering the minimum amount of water, it would depend upon the surface. If the covered surface is *hydrophobic*, which means that it doesn't attract water, the water will form beads on the surface, and you'll need more water to fully cover it. If the surface is *hydrophilic*, which means it does attract water, I suppose you could get a depth of about the size of a water molecule- theoretically. I think it was Benjamin Franklin who made an estimate of the thickness of a film of oil spread upon a still lake, which gave an estimate of the size of the oil molecule- but oil molecules are much larger than water.
In other words, just plug how thick water you want- and make it more than a few angstroms (say 1/1000000000 feet).

Answer 3

Gallon is a volume measurement. Acre is an area measurement. You could cover 1 acre with any volume you want, right down to where the water is only one molecule thick (at least theoretically; it would probably evaporate pretty quickly if it was that thin). The usual volume measure for large bodies of water (as in a lake or holding pond) is the acre-foot, one acre covered with water to a depth of one foot, 325,853.382 U.S. gallons.

Answer 4

don't know but what I would do is go to the internet on google.