Alau Dam Aftermath: An unprecedented disaster (Videos) The Alau Dam flood has left devastating impacts on the local community, with business owners like Usman Hassan Yahaya facing unimaginable challenges. His account is just one of many illustrating the gravity of the situation. “I run a company named Hassan Yahaya and Sons Petroleum Company. We have been here in Gwange for 30 years. Years ago, we saw the waters, but it didn’t come too close to us. But this time, we just saw the water coming this way a few days prior....