Flood Sensors2018-09-26T17:12:13+00:00
Green Stream Flood sensors over a body of water

Flood Sensor

Green Stream Flood Sensors are low-cost, low-footprint, fully-rugged device that measure flood water levels. They are designed for installation into complex, hard-to-reach or hard-to-cover regions.

The sensors utilize non-contact, ultrasonic technology to measure the distance from the surface of the water to the sensor.

Sensors may quickly be positioned above a body of water, or over dry land that is prone to flooding (intersections, underpasses, low-lying parking lots or sections of road).

The sensors gather water level data and communicate that data to the Green Stream Wireless Gateway or a LoRaWAN™ compliant gateway.

The sensors are autonomous, requiring no external power or network connection. Efficient on-board batteries provide reliable power and a solar panel charges the batteries. The sensors are highly efficient and consume very little power; in fact, they can run for weeks from a single battery charge.

The sensors are enclosed in a IP67 compliant weather-proof enclosure. Each sensor is a self-contained, weather-proof, solar-powered unit that comes with a universal mounting bracket and extension arm. The arm extends the sensor’s reach so as to reduce the occurrence of reading obstructions below the sensor and to reduce false reading due to non-vertical mounts (ex: non-vertical light poles or power poles) .


Flood sensors support the LoRaWAN™ security model. They support both Over-the-Air Authentication (OTAA) and Activation by Personalization (ABP).

In dense urban environments or neighborhoods, sensor-to-gateway communications can span upwards of 2 km. In sparse or remote areas, communications can span as far as 22 km, line-of-sight.

Sensors come with a half-wave IP67 rated antenna that attaches via external SMA connector. Alternate antennas, (full-wave, full-wave dipole, yaggi) can be used to extend their range.


The flood sensors support two-way communications with a LoRaWAN™ compliant gateway and operate in Class A or Class C mode.

In the case of OTAA, the sensors are provisioned with an AppKey during configuration. For ABP, the sensors are provisioned with NwkSkey and AppSkey session keys prior to shipment.



LoRaWAN™ 1.1, Class A and Class C

External Antenna Connector


Physical Dimensions, sensor enclosure

4” x 4” X 1”

Physical Dimensions, mounting bracket

6” x 12” x 2”


2.2 lbs. (1 Kg)


Fully Rugged


Operating Frequency

902 Mhz to 928 Mhz at +20 dBm


Up to 22 Km (line-of-sight)

Input Power

Autonomous power (batteries and solar panel) No external power required


Operating Temperature

-20° F (-30° C) to 140° F (+60° C)


Yes (IP67 Rated)