Frisches Haff ('Fresh-water Bay'), a lagoon on the coast of Prussia, south-east of the Gulf of Danzig, about 50 miles in length, 4 to 11 miles broad, and 332 sq. m. in area. It was once entirely walled off from the Baltic by a narrow spit of land, through which a passage, 1247 feet wide and 14½ feet deep, was cut in 1510 during a violent storm. The Haff is 10 to 16 feet deep.
Frisches Haff
Chambers's Encyclopaedia, Volume 5: Friday to Humanitarians, p. 9
Source scan(s): p. 0018