Mahmut Bendi), is a historic dam located in Sarıyer district of Istanbul Province, Turkey.

The New Dam was built in 1830 by Ottoman Sultan Mahmud II (reigned 1808–1839).

[2][3] The New Dam impounds a tributary of Acıelma Creek and has a catchment area of 0.83 km2 (0.32 sq mi).

It is a solid gravity dam constructed in masonry having a circular form.

This article about a dam, floodgate or hydroelectric station in Turkey is a stub.