Flood

A flood is an overflow of water that submerges or "drowns" land. The definition a flood is a covering by water of land not normally covered by water. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Flooding may result from the volume of water within a body of water, such as a river or lake, which overflows or breaks levees, with the result that some of the water escapes its usual boundaries, or may be due to accumulation of rainwater on saturated ground in an areal flood.

Aquaman once saved one of the Pacific Islands from being flooded by having a bunch of whales form a breakwater.

Appearances
Super Friends
 * Season 1: Too Hot to Handle