Question: how much energy required to pump water?
Answer: The answers are: 325,851 gallons which happens to equal one acre-foot, and 2,719,226 pounds or 1,359 tons, which is the weight of one acre-foot of water. A pump discharging 450 gallons per minute is lifting 1.87 tons of water every minute. The energy requirement increases with every foot the water is lifted.