<P> An Olympic - size swimming pool is used as a colloquial unit of volume, to make approximate comparisons to similarly sized objects or volumes . It is not a specific definition, as there is no official limit on the depth of an Olympic pool . The value has an order of magnitude of 1 megaliter (ML). </P> <P> FINA specifications for an Olympic - size pool are as follows: </P> <Table> <Tr> <Td> Physical property </Td> <Td> Specified value </Td> </Tr> <Tr> <Td> Length </Td> <Td> 7001500000000000000 ♠ 50.000 + 0.030 − 0.000 m </Td> </Tr> <Tr> <Td> Width </Td> <Td> 7001250000000000000 ♠ 25.0 m </Td> </Tr> <Tr> <Td> Depth </Td> <Td> 2.0 m (6 ft 7 in) minimum, 3.0 m (9 ft 10 in) recommended . </Td> </Tr> <Tr> <Td> Number of lanes </Td> <Td> 10 </Td> </Tr> <Tr> <Td> Lane width </Td> <Td> 2.5 m (8 ft 2 in) </Td> </Tr> <Tr> <Td> Water temperature </Td> <Td> 25--28 ° C (77--82 ° F) </Td> </Tr> <Tr> <Td> Light intensity </Td> <Td> minimum 1500 lux (140 footcandles) </Td> </Tr> <Tr> <Td> Volume </Td> <Td> 2,500,000 L (550,000 imp gal; 660,000 US gal), assuming a nominal depth of 7000200000000000000 ♠ 2 m . <P> 2,500 m (88,000 cu ft) in cubic units . About 2 acre - feet . </P> </Td> </Tr> </Table> <Tr> <Td> Physical property </Td> <Td> Specified value </Td> </Tr>

How many lanes are in a olympic swimming pool