Brackish

n. - (also called brackish water), water with a salt concentration greater than that of fresh water but less than that of sea water; that is, water that is saltier that fresh water but not as salty as sea water. Brackish water has a salt concetration ranging from 0.5 to 35.0 parts per thousand (ppt).

Brackish water is typically found in an estuary (such as a saltwater swamp or saltwater marsh) or at the mouth of a river, where the sea tide interacts with the flow of water from the land, causing salt water and fresh water to mingle.

Brack"ish (?), a. [See Brack salt water.]

Saltish, or salt in a moderate degree, as water in saline soil.

Springs in deserts found seem sweet, all brackish though they be. Byron.

 

© Webster 1913.