Dams are a huge source of water supply for any city and many people depend on the water supplied by dams forfulfilling their basic requirement of water. However just as much helpful dams are, they are also responsible for huge lossesof life and infrastructure. Gates of dams have to be opened up during heavy rainfall which leads to flooding in villages situateddownstream. If timely warning is not given, this could lead to widespread devastation. To prevent this loss, we need an automatic gate control and warning system. Internet of Things (IOT) has become an indispensable solution for uploading the data on cloud and accessing it. This paper presents implementation of automatic controlling of the Dam gate using NodeMCU interfaced with float sensors. The proposed system isuse in automatic operation of the dam gate. The quantity of water in tank is calculated according to the area of dam and position of float sensors interfaced. IOT is being used for uploading the status of dam gate and also a text message is sent using the Twilio software, for precautionary purpose. This proposed system intimates regularly via internet to the authority and villagers about any changes in data of dam level for eluding unpleasant. The total time taken by the gate of our model to open fully is 323seconds and the time taken to upload the data and to send the message to the registered mobile number is approximately 20 seconds, once the water level reaches first sensor.

IoT, Water Level Monitoring, Stepper Motor,Float Sensor, Dam gate Control