Dike*
Dyke is a slur (offensive word) used towards lesbians.
And the dike is the raised part, it's the thing not flooded in the photo. A dike is used to prevent flooding, so a flooded dike would require a LOT more water.
Right, used Google translate and still got it wrong.
The picture is from the day after, the dike did overflow(/flood?) and is now keeping the water in, hence the water on the wrong side.
EDIT: According to Merriam-webster, "dyke" is the British spelling of "dike", though it can also be a slur in the right context.
