Residents of Derna tell the BBC how they got out alive as floodwaters smashed through the city.
Egypt is concerned that Ethiopia is using water from the Nile to fill its giant Renaissance dam.
At least 10,000 people are missing, rescuers struggle to recover bodies swept away in raging flood waters.
Eyewitness footage shows a torrent of water flowing through Derna, causing massive destruction.
To stay alive, earthquake survivors need access to clean drinking water and proper sanitation services as a priority.
Officials say the group ignored alerts after straying from Moroccan waters, but a survivor disputes this.
The Algerian coastguard reportedly shot at four French-Moroccan tourists who strayed into Algerian waters.
Dozens of refugees left without water or food in the desert after being expelled from Tunisia following racial tensions.
Coastline to remain off limits with a ban on swimming, snorkelling and other water sports activities until Sunday.
Concerns range from water supplies and oil pipelines to a new humanitarian crisis in the making.