This document summarizes an IoT-based flood detection system. The system uses sensors like ultrasonic sensors, temperature and humidity sensors connected to an Arduino board to detect water levels and environmental conditions. When flooding is detected, a WiFi module relays the sensor data to the cloud for analysis and alerts. The document discusses the motivation for such a system due to widespread flooding in India. It provides examples of past floods and damage. It then outlines the objectives, methodology, block diagram and components of the proposed IoT system for automatic flood detection and notification.