International Journal of Engineering Applied Sciences and Technology, 2021 Vol. 6, Issue 1, ISSN No. 2455-2143, Pages 155-158 Published Online May 2021 in IJEAST (http://www.ijeast.com) 155 FLOOD AVOIDANCE USING IOT Jasmin Maurya, Hemlata Pant, Shivani Dwivedi, Muskan Jaiswal Department of Computer Science & Engineering Babu Banarasi Das Institute of Technology & Management Lucknow, Uttar Pradesh, India Abstract - Flood is a common problem not only in India but worldwide and most of the water bodies are easily accessible to common people. At times it may happen that the weather conditions may change suddenly and the water bodies may become violent, resulting in a flood which can lead to loss of lives as well as livestock. Therefore, a rapid flood detection system that can reach a wide area such as the internet is necessary to minimize the effects of disasters. So, this paper proposes a flood detection system with the help of the Internet of Things (IoT). IoT is a smart technology that has the capability to send data in real- time. The system is powered using Arduino and has 3 sensors to detect 5 different parameters. Firstly, to measure temperature and humidity we have DHT-11 Digital Temperature and Humidity Sensor. Then we have the Water Flow sensor to check the flow of water. And lastly, to measure the distance and water level we have HC-SR04-Ultrasonic Range Finder and Distance Sensor. Finally, the collected information is transmitted to LCD to display the information. The system continuously keeps checking any changes in the weather condition and updates the live data over IoT. In case the parameters reach a dangerous level the system immediately alerts the people. Keywords: Flood detection, IoT, real time, Sensors, DHT- 11, HC-SR04 I. INTRODUCTION: Floods are among the most frequent disasters and natural hazards in the world, affecting human lives and causing severe economic and social damage. It is understood that flood risks will not decrease in the future and with the emergence of climate change, flood intensity and frequency will threaten many regions of the world [1,2,8]. To minimize the extent of the wreck caused by a flood, warning systems to inform the people of the disaster should be implemented in high-risk areas. This system is going to be ready to cut the damages of the flood. The system should be designed to be ready to detect the rising levels of water so appropriate warnings to the authorities and therefore the public are often sent. In our approach, the flood detection system components will consist of micro-controllers, sensors, Arduino Uno, and a WiFi module. As we all know The Arduino Uno is an open- source micro-controller board supported by the Microchip ATmega328P micro-controller [5]. Micro-controllers are practical, affordable, and versatile solutions to several challenges of circuit design and modern control systems. In our proposed work we have used the C programming language to program the board. So, the basics of micro- controller programming include 3 simple steps: Firstly, we write the code on our computer, Secondly, we compile the code using an Arduino Compiler and finally we upload the compiled version of the program to our micro-controller. For doing this we connect the Arduino using the USB cable to our computer. Then we choose the correct serial port for the board under the Arduino menu and upload the code. And then the micro-controller is ready to be used. The second most important sensor we have used is the Ultrasonic sensor. Ultrasonic sensors are generally used for distance measurement purposes. They work on the principle of sonar. The sensor is quite small as well as easy to use and offers excellent non-contact range detection between 2 cm to 400 cm (that is about an inch to 13 feet) with an accuracy of 3mm. Since it operates on 5 volts, it is often hooked on to an Arduino or the other 5V logic micro-controllers. In our proposed work this sensor also finds the level of water [6]. Nowadays, the technology which has been used for flood detection system is much more error-free than the devices of the last decade. The following section describes the proposed method intimately. II. PROPOSED APPROACH: The main aim of our approach is to detect the rising water level in a river at a reasonable distance from the rail and alert the authorities and warn them to take appropriate action whenever a flood disaster happens. To recognize a flood the system detects several natural factors, that include humidness, temperature, water level, and flow level. To fetch knowledge of mentioned natural factors the system consists of various sensors that collect knowledge for individual parameters. For detection changes in humidness and temperature the system options a DHT11 Digital Temperature humidness device. it is an advanced device module that consists of resistive humidness and temperature detection elements. The water level is sometimes underneath scrutiny by a floating device, that works by gap and motility circuits (dry contacts) as water levels rise and fall. It unremarkably rests within the closed position, which means the circuit is skimpy and no electricity is passing through the wires nonetheless. Once the water level drops below a pre- established purpose, the circuit concludes itself associate deg-reed sends electricity through the finished circuit to trigger an alarm. The flow device on the system keeps a detailed watch on the flow of water. The water flow device contains a plastic valve body, a water rotor, and a hall- effect device. once water passes through the rotor, the