Musuva says the immediate priority is to construct the emergency spillway as the commission establishes long-term plans to restore the dam. Nairobi Rivers Commission CEO Brigadier (Rtd) Joseph Muracia, commissioner Mumo Musuva during a past event at Nairobi dam.The Nairobi Rivers Commission has announced notable progress in the ongoing rehabilitation of the Nairobi Dam, which had been neglected for years.