Wireless Real-time Observation System for Water Level of Urban Drainage

Real-time water level observation in urban drainage is essential o control rainwater or sewage storage so as to reduce overflow pollution. To achieve real-time data accessing, wireless communication and ultrasonic water level gauge are integrated to design the observation system. A developed wireless real-time observation system for Caohejing drainage system in Shanghai, with the area of 3.74 km², is presented to show how to control storm drainage so as to reduce dry-weather pump discharging, which also displays reliability of the system.