Urban Waterlogging Early Warning and Monitoring System Solution

Urban Waterlogging Early Warning and Monitoring System Solution

The Urban Waterlogging Early Warning and Monitoring System addresses the needs of urban flood control and emergency management. It deploys non-contact radar water level gauges and visual monitoring equipment at flood-prone points such as underpasses, underground passages, and low-lying road sections. This enables real-time monitoring of water accumulation depth, tiered early warnings, and coordinated traffic control, serving as a key sensing infrastructure for the city's "Smart Flood Control" system.

Construction Background

With global climate change and accelerated urbanization, extreme rainstorm events are occurring more frequently. Urban waterlogging has become a significant risk affecting the safety of citizens' lives and property. Statistics show that over 200 cities in China experience varying degrees of waterlogging disasters annually, with low-lying areas like underpasses, urban tunnels, and subway entrances being the hardest hit.

The Ministry of Housing and Urban-Rural Development's "Action Plan for the Construction of Urban Drainage and Flood Control Facilities" explicitly requires the establishment of an urban waterlogging risk monitoring and early warning system to achieve real-time monitoring of water accumulation depth in key areas and rapid dissemination of warning information. The traditional manual inspection model is slow to respond and has limited coverage, urgently needing IoT technology to empower urban flood control.

System Architecture

Core Functions of the Waterlogging Monitoring System

Real-time Water Accumulation Depth Monitoring
Radar water level gauges are installed above flood-prone points (on street light poles/special poles) to measure road surface water accumulation depth downwards, with a resolution of 1mm and a refresh rate of up to once per minute. Non-contact measurement is unaffected by debris, sediment, or oil stains.

Visual Remote Confirmation
The integrated visual radar simultaneously provides on-site high-definition video streams, allowing flood control command personnel to remotely view the actual waterlogging situation, avoiding unnecessary deployments caused by false alarms. Water level data is overlaid on the video feed, ensuring authenticity and credibility.

Four-tier Warning & Traffic Coordination
Automatically triggers Blue, Yellow, Orange, and Red warnings based on water accumulation depth. At Yellow warning, roadside LED warning screens automatically light up to display "Waterlogging Ahead, Please Detour"; at Red warning, traffic signals are coordinated to close the passage entrance.

Water Accumulation Prediction & Dispatch
Combining weather radar rainfall forecasts and historical waterlogging data, AI models predict the trend of water accumulation depth changes at each monitoring point for the next 1-3 hours, providing data support for preemptive decision-making regarding drainage pump station dispatch and traffic control.

Typical Deployment Scenarios

Underpasses
Urban underpasses are severely affected by waterlogging. Radar water level gauges are installed beneath the bridge structure, coordinated with LED warning screens and barrier gate systems to automatically close the passage when water accumulation exceeds 30cm.

Subway Entrances/Exits
Water accumulation monitoring points are set up around subway station entrances/exits. An automatic alarm is triggered before water depth exceeds the height of flood barriers, notifying subway operators to initiate emergency measures to prevent rainwater backflow.

Low-lying Residential Areas
Monitoring equipment is deployed in low-lying areas of old residential communities. Waterlogging warning information is simultaneously pushed to community property management and residents' mobile phones, enabling early relocation of basement supplies and vehicles.

Solution Advantages

• Minute-level Response: Fully automated from water detection to warning issuance, response time.
• Plug-and-Play: Solar power + 4G transmission, no trenching or wiring required, rapid deployment within 2 hours.
• Maintenance-free: Non-contact measurement avoids contact with water,不会被垃圾堵塞，maintenance cost is extremely low.
• Life Safety Assurance: Automatically closes waterlogged road sections, effectively preventing vehicles and pedestrians from encountering danger in floodwaters.

Product Features

• Non-contact Water Level Monitoring: The radar water level gauge is installed above street light poles or vertical poles, without contact with accumulated water, unaffected by debris blockage, and maintenance-free.
• Visual On-site Verification: Radar + HD Camera Integration, Water Accumulation Data Overlaid on Real-Time Video, Enabling Flood Control Commanders to Remotely Confirm Actual On-Site Conditions.
• Graded Warning and Linkage: Four-level warning system—Blue (20cm)/Yellow (30cm)/Orange (40cm)/Red (50cm)—automatically triggers information screen alerts and traffic control.
• Rapid Deployment Capability: Solar-powered + 4G wireless transmission, no wiring required, single-point installation completed within 2 hours.
• GIS One-Map Management: Real-time annotation of citywide waterlogging monitoring points on the GIS map, with water depth heatmaps clearly displayed at a glance.
• Multi-channel alert dissemination: synchronized alerts across platform screens, mobile apps, SMS, WeChat official accounts, and roadside LED displays.