Flow velocity and discharge measurement device
using video images

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The Hydro-STIV Portable is a measurement device that can record videos with a built-in camera in a smartphone or tablet and perform velocity and discharge measurements on-site. The velocity and discharge can be measured using only angle information from the smartphone or tablet accelerometer and distance to the water surface. It does not require surveying of GCPs and can easily measure flow velocity and discharge using distance between the two points.

High Measurement Accuracy by Hydro-STIV

Evaluation of Discharge Measurement Accuracy by Hydro-STIV Portable

Tablet and Drone Linkage Function

Using images taken by a drone, the flow velocity and discharge measurements can be performed in real-time, on the spot.
Wide rivers with poor visibility to the opposite bank, mountainous areas that are difficult for people to approach, and rivers during flood can also be measured by a drone footage.

Data