Three Main Lakes Within Istanbul Province, Turkey – December 8th, 201041.1N 28.6E
This orthorectified image shows part of Istanbul, on the west side of the Bosphorus Strait. Several lakes can be observed nearby; these are the three main lakes within Istanbul province: Terkos (top), Küçükçekmece (bottom, right), and Büyükçekmece (bottom, left).
These mid-sized lakes were formed when the valleys were flooded by water many centuries ago. Terkos was cut off from the sea therefore it has fresh water, but Küçükçekmece and Büyükçekmece are still connected to the sea therefore have a slightly salty waters.
Terkos Lake, also known as Duru Gol and Derkos Golu, is located 50 kilometers to the north of Istanbul on the Black Sea coast. It has an area of 25 square kilometers and is surrounded by small forests. The lake is fed by Istiranca river so its waters are fresh.
Küçükçekmece Lake is located 20 kilometers west of the city center on the shores of the Sea of Marmara, and has an area of 16 square kilometers. It’s fed by Sazlidere, Hadimkoy and Nakkasdere streams and is connected to the sea by a small channel under the breakwater.
Büyükçekmece Lake is located 35 kilometers to the southwest of Istanbul city center in the Mimar Sinan neighborhood, near Beylikduzu district next to the Sea of Marmara. The lake has an area of 12 square kilometers with shallow waters (deepest section is about 6 meters), fed by Karasu stream.