The word(s) "river" appears 59 time(s) in 54 verse(s) in Quran in Muhammad Pickthal translation.

(51) O ye who believe! Turn unto Allah in sincere repentance! It may be that your Lord will remit from you your evil deeds and bring you into Gardens underneath which rivers flow, on the day when Allah will not abase the Prophet and those who believe with him. Their light will run before them and on their right hands; they will say: Our Lord! Perfect our light for us, and forgive us! Lo! Thou art Able to do all things.

(52) And will help you with wealth and sons, and will assign unto you Gardens and will assign unto you rivers.

(53) Lo! those who believe and do good works, theirs will be Gardens underneath which rivers flow. That is the Great Success.

(54) Their reward is with their Lord: Gardens of Eden underneath which rivers flow, wherein they dwell for ever. Allah hath pleasure in them and they have pleasure in Him. This is (in store) for him who feareth his Lord.