Results of RIVeR Validation During the WMO HydroHub Workshop in Costa Rica (May 22–23, 2025)

[antoinepatalano]

Results of RIVeR Validation During the WMO HydroHub Workshop in Costa Rica (May 22–23, 2025)

📍 Location: Río Grande de Orosí, Station #9-19
📆 Event: WMO HydroHub Field Workshop on Innovative Hydrometry (May 22–23, 2025)
📷 Setup: Oblique video acquisition and visual flow estimation using RIVeR

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📊 Results

During the workshop, participants used RIVeR to estimate river discharge from an oblique video.

The result was compared to a reference discharge of 25.8 m³/s, measured using an ADCP (SonTek RiverRay) over six transects. These measurements were taken during slightly rising water levels, and a partially unmeasurable area on the right bank introduced additional uncertainty.

A ±12.5% uncertainty margin was estimated for the ADCP reference using QRev, reflecting both hydrodynamic changes and data limitations.

➡️ The discharge estimated with RIVeR fell within this uncertainty range, demonstrating good agreement with the ADCP result under real-world field conditions.

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📄 Download the Full RIVeR Report (PDF)

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We’re grateful to the WMO HydroHub team, local partner in Costa Rica (ICE), and all participants who made this validation possible.

If you’re interested in testing RIVeR or contributing to its development, feel free to join the discussion or open an issue here in the repository!