Flash Flood Warning System

In recent years, extreme weather events have increased, with a clear trend of heavy rainfall, especially local rainfall, and records of rainfall intensity constantly being broken. Flash torrents have become more frequent, and casualties caused by flash torrents and geological disasters in small watersheds have accounted for more than 80% of casualties from floods and typhoons. Flash torrents have become one of the three major risks in the current field of water and drought prevention.

Flash flood disasters refer to floods, debris flows and landslides caused by rainfall in hilly areas. Flash flood disasters caused by sudden and localized extremely heavy rainfall have caused a large number of casualties, accounting for an increasing proportion of the total number of deaths from flood disasters, and mass deaths and injuries occur from time to time.


By building flash flood disaster sound, light and electricity early warning monitoring stations in extremely high-risk or high-risk areas near rivers for flash flood disasters , the coverage of the sound, light and electricity early warning capabilities for flash flood disasters will be expanded. Taking the construction of flash flood disaster monitoring and sound, light and electricity early warning systems as an opportunity, we will promote the formation of a new flash flood disaster early warning system that is diverse in methods, reliable and effective, and interconnected, and effectively improve the all-weather, full-process monitoring and early warning capabilities of flash flood disasters in all cities and counties.

System composition

The flash flood disaster warning system consists of front-end sensing and warning equipment and back-end flash flood warning subsystem. The front-end sensing equipment can timely and effectively measure water level and rainfall data, and provide basic information for the flash flood warning subsystem analysis. The flash flood warning subsystem issues warning instructions through data analysis and warning rules. The flash flood disaster monitoring and sound and light warning system can issue forecasts and alarms in a timely manner. It is one of the important measures to avoid risks in a timely manner and avoid or reduce casualties and property losses caused by flash floods. It is a guarantee for effectively defending against flash floods, implementing command decisions and dispatching, and emergency rescue. It plays a pivotal role in the prevention and control of flash floods.

System functions

①It has real-time water level monitoring function, and the monitoring data and alarm information are connected to the provincial mountain torrent disaster monitoring and early warning platform in the prescribed format.

②It has the function of automatic alarm when the water level exceeds the warning threshold, supports voice (siren), flash and other alarm methods, and supports manual shutdown of false alarm function on the device side.

③It has the function of configuring system parameters such as water level warning thresholds, alarm rules, and equipment linkage.

④It has the function of starting the alarm in advance when the remote threshold is approaching and shutting down the false alarm.

⑤It has the function of automatically filtering abnormal water level values.

⑥Supports remote monitoring of system status such as online status, battery status, communication status, etc.

⑦Support multiple power supply modes: battery power supply, solar charging, AC power supply (optional).

⑧Supports automatic sending of text messages or voice calls to relevant responsible persons after device alarm is triggered.

⑨If voice warning equipment is configured, it should support remote voice call function on mobile phones.

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