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How many litres of freshwater are flushed out to sea when one ship transits the original Panama Canal locks?

200 million
litres
200,000,000 exactly, give or take
Every ship that passes through the original Panama Canal locks sends around 200 million litres of freshwater out to sea — about 80 Olympic pools per transit.SOURCEPanama Canal Authority
Scale check: 200 million is roughly about the population of Japan.
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