Lake Büyükçekmece

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Lake Büyükçekmece
Gürpınar'dan Büyükçekmece Gölü.JPG
The lake in background seen from Gürpınar at Marmara Sea
Lake Büyükçekmece is located in Turkey
Lake Büyükçekmece
Lake Büyükçekmece
LocationIstanbul Province
Coordinates41°04′8.40″N 28°33′0″E / 41.0690000°N 28.55000°E / 41.0690000; 28.55000Coordinates: 41°04′8.40″N 28°33′0″E / 41.0690000°N 28.55000°E / 41.0690000; 28.55000
Native nameBüyükçekmece Gölü  (Turkish)
Primary inflowsKarasudere
Catchment area622 km2 (240 sq mi)
Basin countriesTurkey
Max. length7 km (4.3 mi)
Max. width2 km (1.2 mi)
Surface area28.47 km2 (10.99 sq mi)
Max. depth8.6 m (28 ft)
Water volume16,161 hm3 (3.877 cu mi)
SettlementsBüyükçekmece, Çatalca

Lake Büyükçekmece (Turkish: Büyükçekmece Gölü) is a liman formed at the point where the river Karasudere flows into the Marmara Sea. The lake is located south of the Çatalca district, west of Istanbul, Turkey. It is used as a freshwater reservoir.

The lake's bar was reinforced in 1988 by a dam. The area of the lake is 28.47 km2 (10.99 sq mi), and is 7 km (4.3 mi) long and 2 km (1.2 mi) wide. The maximum depth is 8.6 m (28 ft), following deepening carried out by the State Hydraulic Works.[2]

The fluvial lake developed as the flow of Karasudere, and as it came downwards from Çatalca it was blocked off and formed by the resulting sandbank it created. A reedy, brackish salt-water lake exists between the Büyükçekmece Dam and the Marmara Sea. Another lagoon, Lake Küçükçekmece, is located around 12 km (7.5 mi) east of Lake Büyükçekmece.

The number of fish species observed in the lake has decreased from 30 in the past to 15 currently.[2]

A historic 635 m (2,083 ft) long and 7.17 m (23.5 ft) wide multiple arch bridge, named after the Ottoman architect Mimar Sinan (1489-1588), spans the narrow opening at the bar connecting the lake to the sea.[3]

At the northern shore of the lake, Istanbul Hezarfen Airfield is situated on a peninsula.

Biology and status[edit]

The lake, which is not protected, was declared by BirdLife International as an Important Bird Area in 1989 for its numerous distinct and threatened waterfowl species.[4]

See also[edit]


  1. ^ "Büyükçekmece Barajı" (in Turkish). DSİ. Retrieved January 11, 2009.
  2. ^ a b "Büyükçekmece Gölü" (in Turkish). Environment and Forest Ministry. Archived from the original on November 7, 2008. Retrieved January 11, 2009.
  3. ^ "Büyükçekmece Hakkında Herşey" (in Turkish). Büyükçekmece Net. Archived from the original on May 17, 2008. Retrieved January 11, 2009.
  4. ^ "Important Bird Areas In Turkey: Unprotected And Under Threat æauthors=Grimmett, R. F. A. & M. Kasparek, A. Kılıç, A. Ertan I" (PDF). Retrieved 2014-07-13.