 In addition, four river sluices (gate controlled) are also provided in the body of the spillway pier numbers 3, 4, 5 and 6 with outlet level at , with each sluice designed for a discharge capacity of for silt flushing.The energy dissipation arrangements on the downstream slope of the spillway is in the form of high level and low level slotted roller bucket type.Measuring instruments have been installed in the body of the dam to record and analyse various parameters related to the behaviour of the dam over the years as part of the dam safety programme The dam is founded on massive basaltic rock formations.