Dam Lies.

It was all over the news. Even reputable sites printed the press release verbatim, without any fact checking. The agitprop sites of as usual were the worse.  Versions of the story appeared on media from Iran, Qatar, Russia, China, the UK, France and the Palestinian Authority

A typical version from Ma'an News

Hundreds of Palestinians were evacuated from their homes Sunday morning after Israeli authorities opened a number of dams near the border, flooding the Gaza Valley in the wake of a recent severe winter storm.

The Gaza Ministry of Interior said in a statement that civil defense services and teams from the Ministry of Public Works had evacuated more than 80 families from both sides of the Gaza Valley (Wadi Gaza) after their homes flooded as water levels reached more than three meters.

There was not a word of truth to it.

Via Media Watchdog, CAMERA

Regarding the claim that Israel opened dams, thereby flooding Gaza, a spokesman for the Coordinator of Government Activities in the Territories (COGAT) told CAMERA:

The claim is entirely false, and southern Israel does not have any dams. Due to the recent rain, streams were flooded throughout the region with no connection to actions taken by the State of Israel.

 Prior to the storm, the Coordinator of Government Activities in the Territories allowed the transfer of four water pumps belonging to the Palestinian Water Authority from Israel into Gaza to supplement the 13 pumps already in the Gaza Strip in dealing with any potential flooding throughout the area.

In addition, Nechemia Shahaf, the head of the Drainage Authority for the Shakma-Besor Region, confirmed to CAMERA that there are no dams which can be opened and closed in southern Israel. Shahaf said, "There is a diverting dam one meter high which directs water to reservoirs. This is a low dam which cannot be opened or closed." He also noted that the singular dam, which cannot be opened, is next to Kibbutz Gvulot, and approximately 20 kilometers away from Gaza.

For more (accurate) information

The Bullsh*t Dam Has Burst  

Watchdog Rips AFP for False Report Claiming Israel Flooded Gaza Areas by Opening Dams

AFP Lies, Dam Lies and Floods 

Gazans (and the PA) again blame Israel for the weather (update x2)

AFP Lies, Claims Israel 'Flooded Gaza' with Nonexistent Dam