Given concentrated and heavy rainfall during flood seasons in southern China, low‑lying road sections and underpasses are highly prone to rapid water accumulation. Conventional manual inspections suffer from delayed detection, incomplete coverage and untimely response, making them inadequate for sudden urban waterlogging emergencies. To enhance the refined management of urban flood prevention and waterlogging mitigation, multiple urban areas in southern China have completed the installation of buried road‑surface water‑logging gauges, establishing a comprehensive intelligent monitoring and early‑warning system for road waterlogging.

The devices adopt embedded buried installation, sitting flush with the road surface. They occupy no traffic space and impose no adverse impact on urban appearance or road conditions, and are applicable to various waterlogging‑prone scenarios including urban arterial roads, low‑lying intersections and underpass tunnels. Supported by high‑precision monitoring technology, the equipment continuously collects real‑time road‑surface water‑depth data round‑the‑clock with accurate and stable measurements. Resistant to rain‑wash, debris obstruction and vehicle rolling, the units feature high‑protection enclosures to sustain stable long‑term operation under complex outdoor working conditions.
Real‑time water‑logging data is wirelessly transmitted and uploaded to the management and control platform, enabling visualized dynamic supervision of water accumulation. Once the water‑logging depth reaches the warning threshold, the system automatically triggers alert notifications, helping operation‑and‑maintenance personnel rapidly locate hazard points and conduct emergency responses such as drainage dredging and traffic diversion. The devices effectively fill monitoring blind spots for urban road waterlogging and address flood‑season water‑prevention challenges. They form a smart flood‑prevention closed‑loop featuring “real‑time monitoring, early‑warning notification and rapid emergency response”, comprehensively improving urban drainage, flood‑defense and urban‑safety operation‑and‑maintenance capabilities.
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