Ankara Potable Water Phase II Project, Gerede System

The purpose of the project, financed by the Japan International Cooperation Agency, is to supply potable water to the capital city of Ankara, through a tunnel that is 31.6 kilometer long.

With the project, the water of Gerede Stream, which is a tributary of the Filyos River, will be transported to Çamlıdere Dam through the Işıklı Regulator to be built and a transmission tunnel that ensure gravity flow.

Within the scope of the project, in addition to the Işıklı Regulator, which has a drainage area of 1,170 square kilometers and a reservoir of 1,166 hectometrecube, there is a three-eyed and water intake plant with a radial gate, sedimentation plant, conveyance channel that transfers the water to be taken from the sedimentation plant to the conveyance tunnel and finally the construction of Işıklı Tunnel, which will transfer the water from the Gerede Stream Valley to the Çamlıdere Dam Basin.

The tunnel, which has a diameter of 4.5 meters and a length of 31.580 meters, will ensure the transfer of 94 percent of natural water with a water carrying capacity of 40 cubic meters per second.

Provisional acceptance of Ankara Potable Water Phase II Project, Gerede System was realized on October 04, 2019. The construction sites have been dismantled and landscaped, and the 1-year final acceptance process continues.

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