Flood Alarm System – Evacuation Safety

Flood Alarm System

Flood Alarm System – Evacuation Safety

Flood Alarm System Application: Flood Safety – Rising river levels and evacuation alerts

Customer Challenge
An old mill stream situated within a small hamlet in Northumberland creates a high flood risk to six local houses. When the river rises to 10 – 15ft it only takes up to two hours for the flooding to reach these houses creating damaging consequences not only by the water but by debris that flows down the hill. Our customer required a durable flood alarm system that generates a warning for the residents of the housing area when river levels rise above a certain threshold.

Hanwell Solution: RL4805/6 Flood Transmitter


How does a flood alarm system assist with this challenge?

The Hanwell Flood Transmitter was connected to a V-shaped post securely positioned above the river bank. This was connected by a black cable gland to a high-quality float switch that can work to -30 degrees (to prevent water freezing issues). The transmitter sends a 24/7 monitoring feed to the EMS system, to reassure residents that the system is active and provide constant updates. When the river rises above the predetermined alarm level, the flood switch sends an alert signal to SR2s installed within each house, which sound an alarm with a visual red beacon and sends SMS alerts to all programmed contacts, enabling residents to evacuate within the necessary timescale.

Flood Series Schematic


For a flood alarm system like this or for a similar application, please do not hesitate to contact us, we will almost certainly have a solution for you.