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Floods and excessive rainfall can cause floods and this natural phenomenon often happens at the end of the year. This phenomenon can cause loss of life and destruction to infrastructure. As a surveillance measure, early notification messages should be sent to the local community to avoid loss of property and loss of life. The system in this project implements water level detectors, alarms, emergency lights and notification senders to identify the existence of water levels in current conditions that can be categorized as safe or dangerous. It is a cheaper flood monitoring alternative than systems used by Disaster Management Agencies. A prototype model used as a system simulation to describe the real state of the water level. If the water level is at a dangerous level, this prototype model will send a warning message to the community through the Node-red application, an alarm system and turn on a warning light with a light emitting diode (LED).