Groundwater Sampling Information
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Volume Formula
Volume = p x r2 x h
Curved surface area = 2 x p x r x h
End surface area = 2 x p x r2
Water Data & Formulas
1 gallon water = 231 cubic inches = 8.333 pounds (@ 65°F)
1 pound of water = 27.72 cubic inches (@ 65°F)
1 cubic foot of water = 7.5 gallons = 62.4 pounds (salt water weighs approximately 64.3 pounds per cubic foot)
pounds per square inch at bottom of a column of water = height of column in feet x 0.434 (39°F)
1 miner’s inch = 9 to 12 gallons per minute
Horsepower to Raise Water
Horsepower = |
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(if pumping a liquid other than water, multiply the gallons per minute above by the liquid's specific gravity)
Gallons Per Minute through a Pipe
GPM = 0.0408 x Pipe Diameter inches2 x Feet / minute water velocityWeight of Water in a Pipe
Pounds Water = Pipe Length feet x Pipe diameter inches2 x 0.34Gallons per Minute of a Slurry
GPM Slurry = GPM Water + |
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Approximate Amount of Water in a Well
Diameter of casing or hole in inches
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Gallons per foot of depth
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Cubic feet per foot of depth
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Liters per meter of depth
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1
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0.041
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0.0055
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0.509
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1.5
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0.092
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0.0123
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1.142
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2
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0.163
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0.0218
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2.204
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2.5
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0.255
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0.0341
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3.167
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3
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0.367
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0.0491
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4.558
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3.5
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0.500
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0.0668
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6.209
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4
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0.653
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0.0873
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8.110
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Capacity of Tanks
Tank diameter
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Gallons per foot depth
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12"
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5.86
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18"
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13.20
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24"
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23.42
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30"
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36.6
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36"
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52.6
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42"
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71.6
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48"
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93.6
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54"
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119.0
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60"
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146.0
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72"
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211.0
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