River Flood Early Warning System | IoT Monitoring Solution

A river flood early warning system is usually integrates rain gauges(simple rainfall station or 0.5mm resolution tipping bucket rain gaugrs, or maintance-free rain sensor ), IoT water level sensors, and voice alarm units to deliver fast, reliable alerts. 

Sensors deployed across rivers and watersheds measure real-time rainfall and rising water levels, transmitting data via cellular (4G) or LoRaMesh networks to a central cloud platform. Once critical levels are reached, the system automatically triggers horn speakers for community voice alerts, sends SMS notifications to residents, and updates authorities through the monitoring dashboard.

This early warning system provides advance notice of dangerous flood conditions, giving communities time to evacuate, deploy resources, and prevent damage—ultimately saving lives and property.

Product Components Overview

 IoT Water Level Meter

• Designed as an all-in-one unit integrating solar panel, battery system, millimeter-wave radar water-level sensor, HD camera, telemetry terminal, self-organizing network module, and multi-band antenna.

• Uses FMCW (millimeter-wave) radar for non-contact, high-precision, low-power, rapid water-level measurements—unaffected by temperature, pressure, moisture, or debris.

• Adaptive dual-mode operation (“monitoring” and “observation”) enables intelligent tracking of sudden water-level rises and falls. Make your data accurately.

• Supports edge computing, with thresholds for critical water levels and rising rate, enabling local audible and visual alarms, while transmitting data to multiple data centers (provincial, municipal, county) via 4G and LoRaMesh. 

Simple Rainfall Station

• Employs tipping-bucket mechanism for accurate rainfall measurement, integrated with IoT communication. 

• Supports 4G transmission and LoRaMesh for robust data delivery and networking. 

• Low maintenance, solar-powered, and compatible with mesh-networked local alarm systems.

Horn Speaker (Audible and visual alarm Unit)

• 2X25W speaker, built-in 11000mAh lithium iron phosphate battery. Positioning information supports the reporting of longitude and latitude.

• The product supports both 4G public network communication and LoRaMesh self-organizing network communication capabilities simultaneously. The product can receive early warning information sent through the platform and local AD hoc network devices to issue audible and visual alarms.

• The sound and light alarm is a medium-power alarm device integrating communication, power supply, warning lights and speakers. This product adopts a highly integrated design, achieving a smooth installation experience of "connection upon power-on"

 Integrated Scenario Workflow

• Step 1: Rainfall Detection
  The Simple Rainfall Station measures rainfall in real time and transmits data to the monitoring network.

• Step 2: Water-Level Change Tracking
  The IoT Water Level Meter continuously monitors river levels and captures live images, using edge algorithms to detect sudden surges or critical rising rates.

• Step 3: Threshold Trigger & Edge Alarm Activation
  When either rainfall or water level crosses emergency thresholds, local edge computing triggers voice/visual alarms via the horn speaker—even if network access is compromised.

• Step 4: Alert Transmission & Community Notification
  Simultaneously, alert data (rainfall, water level, images) is sent via 4G and LoRaMesh to provincial/municipal/county control centers for further processing and public alerts.

 Technical Summary Table

 Use Cases & Value Proposition

• Rural River Monitoring: Preemptively warns about flash floods in mountainous or rural river segments.

• Village-Level Protection: Community-level early warning—“hear it to prepare, act to survive.”

• Integrated Flood Management: Real-time data and visuals enhance decision-making at both local and control-center levels.