Hydraulic Model Studies for the Guri Hydroelectric Project Report On the Second Stage Diversion and Flow Characteristics of the Spillway

The Guri Hydroelectric Project, located on the Caroni River in Venezuela, is designed to provide power for the industrial development and river regulation for other downstream plants. The dam is a concrete gravity structure with an earth and rock-filled tie-in to the right bank. In the initial project, the crest will be at El. 220 m above sea level. In the future it is proposed to raise the crest in stages to EI. 245 m and finally to El. 266 m above sea level. The spillway located on the left abutment will consist of three converging concrete chutes with a total width at the crest of 182 m (including the piers) and with lengths varying from 175 to 225m. Intakes and penstocks are incorporated within the gravity structure and lead to the proposed turbines in the powerhouse located downstream of the concrete structure.