Koçköprü Dam and HEPP

The Koçköprü Dam and HEPP was Özaltın Construction's first dam project and it was constructed across the Zilan River.

As a Clay Core Rock Fill dam, Koçköprü's body volume is 3.500.000 m3. The dam was constructed to meet both power generation and irrigation demands. The dam has an installed capacity of 15 MW and its total annual power generation capacity is 50 GWh and irrigation capacity is 13.000 ha.

Client General Directorate of State Hydraulic Works (DSİ) Contractor Özaltın Construction Co., Inc.
Location Van River Zilan
Type Clay Core Rock Fill Purpose of the Project Irrigation + Energy
Body Volume 3.500.000 m3 Reservoir Volume 110 x 106 m3
Height from Foundation 75 m Height from Riverbed 60 m
Crest Length 700 m Number of Diversion Tunnels 1
Length of Diversion Tunnel 500 m Inner Diameter of Diversion Tunnel 5 m
Installed Capacity 15 MW Annual Power Generation 50 GWh
Irrigation Area 13.000 ha Excavation Volume 6.500.000 m3
Concrete Volume 178.000 m3 Fill Volume 4.500.000 m3
Total Underground Excavation 65.000 m3 Length of State Highway 22 km