Do all rivers run into the ocean?

Surprisingly enough, they don’t! The rivers flowing south from the Tassili Mountains in North Africa slow down to a trickle and disappear in the searing heat and scorching dryness of the Sahara sands. Sadly, even some of the world’s great rivers that used to flow into the ocean now fail to reach it. This is caused by water evaporation from dams and irrigation canals that lead to massive water loss.