Seeing a river or drinking water from a river in a dream could have many different meanings depending upon the situation as per Islam.
1- According to Ibn Sirin رحمة الله عليه, the greatest dream interpreter of Islam, the river in a dream represents the King or the leader of the state.
2- Drinking the water of the river in a dream is a sign of committing a sin.
3- Seeing a river with yellow water in a dream means that the dreamer would get respect and benefits from the King.
4- Taking the water out of a river to a vessel means that the dreamer would get proportional benefits.
5- Seeing a dream where you are drowning in the river means that worries and sorrows will become a part of his life.
6- Swimming in a river in a dream indicates getting imprisoned or Jailed. However, if he sees that he swam out of the river, it means getting rid of the imprisonment/jail.
7- Seeing the river from far and not going near to it in a dream means that the utmost desire of the dreamer would be fulfilled.
8- Seeing yourself walking on the river in a way that the foot are not wet represents getting rid of the fire of hell.
9- According to Ibrahim Karmani رحمة الله عليه, getting out of the river in the dream is interpreted as freedom from sorrows.
10- Washing yourself with the water of the river is a sign that the person will be safeguarded by the King.
11- According to Jabar Maghrabi رحمة الله عليه catching prey from the river is a sign that the people of his house would be blessed with a luxurious life.
12- However, catching prey from the river while its water is impure means that the dreamer would die soon.
13- Seeing a noisy river in a dream means that the dreamer would earn haram income.