One of the major water ways in West Africa is the Atlantic Ocean but the water isn't safe to drink because its salt water and if you drink it straight you can get sick. Which in Africa its not good to get sick because they don't have medacine like America.
In west Africa the Sahara desert spreds in it the desert spreads out threw most of the continent.
The Sahel is another important part of West Africa becasue it spreads threw West to East.