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100 feet by 100 feet by one inch equates to 6,233.76 gallons of water.
The volume of water in 1,500 feet of six-inch pipe is: 294.52 cubic feet or 2,203.2 US gallons.
100 feet of 3-inch pipe holds 36.73 gallons of water.
A 72-inch pipe 16 feet long holds up to 3,384.1 US gallons of water.
478.75 gallons (rounded) for every inch the water is deep.
5.5 gallons per 15 feet of 3-inch pipe.
3.27 cubic feet.
22.44 gallons for each inch of the water's depth.
12,239.9 gallons of water per 3,000 feet.
one inch of rain equals 3 cups of water (24 ounces) based on the area of a standard rain gauge.
You would need 2,451 feet of 2-inch pipe for 400 gallons.
272.7 cubic feet or 2,040 US gallons.