Above two pictures shows river which flow in southern part of Cape Town, South Africa.
These Rivers were discovered during the start of 20th Century. The distinguish feature of the river is that the river is divided into two parts one part is Sweat and other is Salty. Where as, Quran described and tells about these two rivers more than 1400 years ago in Surah-Rehman

Quran says in Surah Rehaman 55-19-30
“He released the two seas, meeting [side by side];Between them is a barrier [so] neither of them transgresses.So which of the favors of your Lord would you deny?From both of them emerge pearl and coral.So which of the favors of your Lord would you deny?

And to Him belong the ships [with sails] elevated in the sea like mountains.So which of the favors of your Lord would you deny?

Everyone upon the earth will perish,And there will remain the Face of your Lord, Owner of Majesty and Honor.So which of the favors of your Lord would you deny?Whoever is within the heavens and earth asks Him; every day He is bringing about a matter.So which of the favors of your Lord would you deny?”

Quran mentions about the two seas and also expressed that their is a barrier between them which restircts them from meeting together.

This prediction of Holy Quran is also verified by American University of Colorado’s Naval Scientist Dr.William Jay.

These rivers flow together and their nature came to know in the starting of 20th century where as ALLAH (SWT) mentioned the nature of these two rivers in Holy Quran around 1400 years Back.

These two river flow together and finally settle down in the Ocean, taste of one river is extremely sweet whereas the taste of another river is extremely opposite (that is bitter) but they never mix. There is nothing in between these rivers which stops them from mixing togther but its is the will & order of ALLAH (SWT).