Articles | Volume 24, issue 3
https://doi.org/10.5194/hess-24-1429-2020
https://doi.org/10.5194/hess-24-1429-2020
Technical note
 | 
27 Mar 2020
Technical note |  | 27 Mar 2020

Technical Note: Flow velocity and discharge measurement in rivers using terrestrial and unmanned-aerial-vehicle imagery

Anette Eltner, Hannes Sardemann, and Jens Grundmann

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Latest update: 26 Feb 2024
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Short summary
An automatic workflow is introduced to measure surface flow velocities in rivers. The provided tool enables the measurement of spatially distributed surface flow velocities independently of the image acquisition perspective. Furthermore, the study illustrates how river discharge in previously ungauged and unmeasured regions can be retrieved, considering the image-based flow velocities and digital elevation models of the studied river reach reconstructed with UAV photogrammetry.