Water weighs approximately62.4 pounds per cubic foot and there are 7.48 gallons in a cubic foot, so water weighs about8.34 pounds per gallon. 15921 X 8.34 =132817 lbs = 66.41 tons
15,921 gallons of plain water weighs 132,867.2 pounds.
100 US gallons of water is about 835 pounds.
Four gallons of water is about 33.4 pounds.
950 gallons of plain water is 7,928.1 pounds.
344.4 pounds for 41.269 gallons of plain water.
608 US gallons of water is about 5,076.8 pounds.
1.4212 gallons of water weighs about 12 (11.86702) pounds.
3,740 US gallons of water weighs about 31,229 pounds.
11,000 US gallons of water weighs about 91,850 pounds.
212 gallons of water weighs 1,770.2 pounds.
20.4 US gallons is about 170.34 pounds.
125 pounds.