Vistula Lagoon Vistula Lagoon The Vistula Lagoon (; or "Kaliningradskiy Zaliv"; ; ) is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles (10 to 19 km) wide, and up to 17 feet (5 m) deep, separated from Gdańsk Bay by the Vistula Spit. It is now known as the Vistula Bay or Vistula Gulf. The modern German name, "Frisches Haff", is derived from an earlier form, "Friesisches Haff". The lagoon is a mouth of a few branches of the Vistula River, notably the Nogat, and the Pregolya River. It is connected to
Koggala Lagoon Koggala Lagoon Koggala Lagoon ()is a coastal waterbody located in Galle District,Southern Sri Lanka. It is situated near the town of Koggala and adjacent to the southern coast, about south of Colombo. The lagoon is embellished with eight ecologically rich small islands. The lagoon has a surface area of approximately measuring in length and in width. The water depth ranges from to . The lagoon is largely rain fed and a number of streams are connected to it. Warabokka-ela stream (Koggala-oya) that enters the lagoon from the north-west is the main freshwater supply. Kerena anicut, which was constructed combining two