CIV E 632 - COMPUTATIONAL HYDRAULICS AND HYDROLOGY
SPRING 2009
HOMEWORK No. 5


  1. The design of the La Leche dam in Peru requires an asessment of reservoir sedimentation.

    Assess the design life of the reservoir, using a turbidity of 2. 5 kg/m3.

    The reservoir volume is 80 hm3.

    The drainage area at the damsite is 907.36 km2.

    The mean annual discharge is 6.44 m3/s.

    The specific weight of sediment deposits is 13,000 N/m3.

    Assume the worst-case scenario for sediment size.

    Assume that bed load (sediment transport by rolling and sliding along the bed) and the unmeasured load amount to 40% of the suspended load.

    Calculate the time it will take to fill 20%, 50%, 80% and 100% of the reservoir volume.

    Use onlinereservoirlife.php.