Question

How many gallons are in a cubic foot of water? Or liters in a cubic meter? This could be important in designing your next six-lane, 25-yard (23-meter), 5-foot (1.5-meter) deep swimming pool, which would take how much water to fill? The large amount of water required to fill pools explains, in part, why pools are seldom drained. What is another reason pools are rarely emptied?

Answer

There are 7.48 gallons in a cubic foot and 1000 liters in a cubic meter. A pool this size would take about 126,200 gallons (477,700 liters) of water. A problem with draining pools is their tendency to float up out of wet saturated ground.