Cerron Grande Project

This report describes the results of a hydraulic model test for the Cerron Grande hydroelectric power project. A 1:100 undistorted scale model including the spillway, the power intake and outlet, the headwater approach channel, the spillway exit channel, and a portion of the existing river downstream of the proposed dam site was constructed and tested. All major features of the model performed satisfactorily. The deflector at the downstream end of the spillway was very effective and operated satisfactorily over the entire range of discharges tested. Concentrated vortices were found at the spillway gates when the four gates were not open equally.