Study of reservoir sedimentation due to volcanic eruption and its management Available to Purchase

The sedimentation in reservoirs is mainly caused by sediment inflow from land erosion, riverbank erosion and volcanic eruption. The objectives of this research are to study reservoir sedimentation using the average end-area method for reservoir volume calculation, and to study sediment management in reservoirs and their catchments. This research was conducted in Wlingi and Lodoyo reservoirs, located near Mt. Kelud, one of the most active volcanoes in Indonesia. The assessment reveals that both reservoirs are severely affected by eruptions of Mt. Kelud. The total remaining capacity of Wlingi reservoir in 2015 was 2·20 million m³, which corresponds to 9·2% of the initial capacity. The total remaining capacity of Lodoyo reservoir in 2015 was 1·33 million m³, which corresponds to 25·8% of the initial capacity. Sediment management strategies of both reservoirs consist of methods to reduce sediment inflow from upstream, methods to minimise sediment trapping, and methods to recover the reservoirs’ storage.