Brackish water

The term brackish water refers to water that is more salty than fresh water, but not as much as salt water. It may result from mixing of seawater with fresh water, as in estuaries and sloughs, or it may occur naturally, as in brackish fossil aquifers.

In technical terms, it is often characterized as water containing between 0.5 and 30 grams of salt per litre.

Etymology

The term brackish water derives from the Low Saxon word Brackwater, which is the water of a Brack. A Brack is a small lake caused by a storm tide which broke a dike and flooded the land behind the dike.

see also

Baltic Sea

biosalinity