Nile river

Despite many reservoirs built on the river, a drought in the 1980s caused a massive famine in Ethiopia and Sudan.

An excerpt from the article 17 facts about Nile river
Thanks to Lake Nasser, Egypt avoided disaster, but countries further south were not so lucky. Of the 70 drought events between 1900 and 2012, 55 affected Ethiopia, Sudan, South Sudan, Kenya and Tanzania. According to a Strategic Foresight Group report, about 170 million people have been affected by droughts in the past century, from which half a million have lost their lives.