it depends on what you hold it in
Weigh an empty container; pour a gallon of water into it. Weigh it again. Calculate the difference. That is the weight of the gallon of water.
A gallon of water weighs about 8.34 pounds. So, a 50 gallon water heater full of water would weigh approximately 417 pounds.
About 8.35 pounds per US gallon.
A gallon of water weighs approximately 8.34 pounds.
160
A gallon of water weights 8 pounds. It can vary a bit according to temperature.
== Probably close to the weight of water. 8.34 lbs per gallon.
The weight of water is approximately 8.34 pounds per gallon. So, 400 gallons of water would weigh around 3,336 pounds.
834
8.33
One gallon of water weighs about 8.35 pounds (about 3.8 kilograms).
about the same as a gallon of water: 8+ lbs