Cua Dat Reservoir

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Project location: Chu river - Thuong Xuan district, Thanh Hoaprovince

Construction time: Investigation and design time: 1999-2004

Commencement time: 02/02/2004

Project managers:Dinh Xuan Tu, Le Van Ngo, Le Manh Hiep, Hoang Minh Dzung, Vo Van Lung

Major technical parameters: - Work grade: I

- Catchmentarea: 5938 km²

- Normal water level (NWL): 110 m

- Dead water level (DWL): 73 m

- Total storage capacity: 1,450 million m³

- Effective storage capacity: 793.70million m³

- Dead storage capacity: 268.69million m³

Scale and structure of the project works

Project tasks:

+ Mitigating flood with P=0.6%

+ Creating stable irrigation source for 86,862 ha

+ Supplying water to domestic and industrial uses with Q=7.715m³/s

+ Generating power with N = 97 MW

+ Supplementing water for downstream of Ma river in dryseason to prevent saline intrusion, improve ecological environment with Q=30.42m³/s

+ Main dam:Concreteface rockfill dam (CFRD), L=949.92m, Hmax=118.50m and 2 auxiliary dams

+ Spillway

+ Powerhouse:

- Number of unit: 2

- Installed capacity: 97 MW

- Capacity of 1 unit: 48.5 MW

- Maximum head (Hmax): 89.4m

- Minimum head (Hmin): 45.7m

- Design head (Hdesign): 69.3m