Floods are among the most destructive natural disasters, causing significant loss of life, property, and infrastructure. The need for efficient flood monitoring and management systems has become paramount with the increasing frequency of extreme weather events due to climate change. This paper presents an Intelligent Flood Warning and Dam Operating System that leverages ultrasonic sensors, FTDI232 modules, ESP32-CAM, and SIM modules to provide real-time monitoring and automated decision-making for flood mitigation. The proposed system integrates Internet of Things (IoT) technology with advanced data analytics to monitor water levels, predict flood risks, and control dam operations (Sharma and Tiwari in IEEE Access 8:175,436–175,448, 2020; Singh et al. in Wireless sensor network-based flood detection system using LoRa, 2019, pp. 1–6.; Park et al. in IEEE Sens J 21:5094–5101, 2021). This cost-effective and scalable solution aims to enhance disaster preparedness, ensure timely warnings, and optimize water resource management.