Sarıyar dam

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Sarıyar dam
Location: Provinces Ankara , Eskisehir ( Turkey )
Tributaries: Sakarya , Kirmir Çayı , Aladağ Çayı
Drain: Sakarya
Sarıyar Dam (Turkey)
Sarıyar dam
Coordinates 40 ° 2 '24 "  N , 31 ° 24' 53"  E Coordinates: 40 ° 2 '24 "  N , 31 ° 24' 53"  E
Data on the structure
Lock type: Gravity dam
Construction time: 1951-1956
Height above valley floor: 90 m
Building volume: 568 000  m³
Power plant output: 160 MW
Data on the reservoir
Water surface 84 km²
Storage space 1900 million m³

The Sarıyar Dam ( Turkish Sarıyar Barajı ; also Hasan Polatkan Barajı) is located on the Sakarya in northwestern Turkey .

It is 125 km west of Ankara on the provincial border between Eskişehir and Ankara . The dam was built as a 90 m (above the valley floor) high concrete gravity dam in the years 1951–1956. The wall volume is 568,000 m³. The 84 km² reservoir has a storage volume of 1900 million m³. The hydropower plant has four 40 MW Francis turbines . The normal energy capacity of the hydropower plant is 378 GWh per year. The Gökçekaya Dam is located downstream.