Question: how many cubic litres of water in an olympic swimming pool?
Answer: 2.0 m (6 ft 7 in) minimum, 3.0 m (9 ft 10 in) recommended. 2,500,000 L (550,000 imp gal; 660,000 US gal), assuming a nominal depth of 2 m. 2,500 m3 (88,000 cu ft) in cubic units.