HEC

Project location:Con river- Binh Dinh province

Construction time:Investigation and design time: 1995-2001 - Commencement time: 2002

Project managers:Nguyen Huu Ngoc - Nguyen Xuan Uc

Project tasks:

- Mitigating flood for downstream of Con river

- Irrigating 27,660 ha in the south of Binh Dinh province

- Aquaculture

- Generating power

- Releasing discharge of 3 m³/s to Con river for environment protection

Major technical parameters:

Catchment area: 826 km²

Work grade: II

Surcharged water level (SWL): +93.27 m

Normal water level (NWL): +91.93m

Dead water level (DWL): +65.00m

Upstream water level (UWL): +65,00m

Total storage capacity: 226.21 million m³

Effective storage capacity: 209.93 million m³

Dead storage capacity: 16.28 million m³

Flood mitigation storage capacity: 227.48 x 10⁶m³

Scale and structure of the project major works:

- Gravity RCC dam, dam crest elevation: +95,55m.

- Length of non-overflow dam: 388m (total dam length: 571m),Hmax: 54.55 m.

- Surface spillway with 6 segment gates, dimension: 6(14x11)m operated by hydraulic cylinder, relief discharge p=0.5%= 4637 m³/s. Bottom outlet: 6 gates, dimension 6x(6x5)m, maximum relief discharge p=0.5% =2700 m³/s.

- Pressure intake,F=2.80m, design discharge: 38.1m³/s.

- Powerhouse behind dam, installed capacity: 6600 kw

- Van Phong weir: total length L=502m consists of 2 parts.

+ Earth weir: L= 32 m, (Hmax)=17,5m(non-overflow part)

+ Concrete weir (overflow part):width: 470m, (Hmax): 18m, relief discharge 1%=7376 m³/s.

- Irrigation canal consists of 3 main canals:

+ Van Phong canal: L= 32.42 km, design discharge: 18m³/s, total length of primary canal is 6.2 km and 176 related structures.

+ Vinh Thanh canal: L= 18.84 km, design discharge: 1.71 m³/s, 7 primary canals with total length of 6.2 km.

+ Ha Thanh canal: L= 2.87 km, design discharge: 0.44 m³/s, 5 primary canals with total length of 4.44 km.