Determine the annual flow of the Dnieper River if its average monthly discharge is 1660 m3 / s.

1660 m3 / s × 3600 s × 24 h × 365 days = 5234976 × 10 ^ 4 m3 / year
1 km3 = 10 ^ 9 m3
5234976 × 10 ^ 4 m3 / year = 52.3 km3 / year
Answer: the annual flow of the Dnieper River is 52.3 km3 / year.

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