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Among the most damaging natural catastrophes, floods seriously harm ecosystems, lives, and property. The goal of this project research is to create an Internet of Things-based system that can track water levels in real time. The device checks water levels and sends data via the Blynk IoT platform, giving users real-time notifications, using an ESP32 microcontroller and an HC-SR04 ultrasonic sensor. After undergoing extensive testing in a variety of scenarios, the system proved to be effective at identifying sharp increases in water levels and swiftly notifying users. Google Sheets connection also guarantees effective data logging for decision-making and historical analysis. Designed for flood-prone regions, this dependable and reasonably priced system provides improved catastrophe readiness, prompt response strategies, and a scalable platform for wider flood monitoring and management applications.