HEC

Project location: Truoi river - Thua Thien Hue province
Construction time:Commencement in 1996
Project managers: Phan Nhu Hai, Nguyen Van Sinh, Pham Van Thuc
Project duties: - Gravity irrigation area: 8246 ha; - Mitigating flood from 2350 m³/s to 1719.9 m³/s (p=0.5%)

Major technical parameters:
Catchment area: 75.3 km²
Work grade: III
Surcharge water level: + 46.3 m
Normal water level: + 42.0 m
Dead water level: +20.0 m
Total storage capacity: 55.026 million m³
Effective storage capacity: 51.026 million m³
Dead storage capacity: 4.18 million m³
Scale and structure of main project works:
Main dam: Rock and earth dam, L= 265m, Hmax = 49.1 m.
Auxiliary dam: Rock and earth dam, L= 178m, Hmax: 42.4m.
Spillway No.1: Surface, gated, nappe shaped spillway, dimension = 3 x 8 = 24m, maximum relief discharge = 1318.1 m³/s.
Spillway No.2: Free spillway B= 25m, maximum relief discharge = 401.8 m³/s.

South Intake under auxiliary dam, upstream dimension bxh = 2x2.5 m, downstream dimension bxh=2.0x2.0m
Canal system:
Gravity irrigation canal system consists of:
Gravity irrigation area in Phu Loc highland:
+ Length of main canal: 13.987 km
+ Length of primary canal: 27.6 km
+ Length of secondary canal: 36.87 km
Beneficiary area in south delta of Huong river with existing structure system receives water from Truoi reservoir to irrigate 7000 ha by at-field canal system, existing saline intrusion prevention and flood evacuation structures.