ShonaBondhu: a cloud based system to handle flash flood

Flash Flood is a natural disaster that floods away large area where there are dense presence of rivers. Bangladesh is one such country where people face this sudden flood problem and loses valuable assets using manual water level monitoring. The challenge lies in the sudden increase of water level once the flood water is in. We are proposing a distributed system using water level monitoring sensors named Shonabondhu. The sensing nodes are distributed all across the country and the servers that collect data from sensors are spread around various regions. The servers use a function of rainfall and current water level that indicate a particular gradient to that sensor. The gradient information among sensors are related using the water level and rainfall data over four years (2008 to 2011). This gradient information is updated and propagated when any kind of change is present near the source of the river. A communication abstraction is created to propagate sensitive information and periodic updates of current status. We have used actual sensors to monitor the water level in the river and have used emulated sensors to mimic the behavior in large distributed system. Our current system works as a proof of a concept system before the actual deployment of this system in collaboration of Water Development Board of Bangladesh.