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Calibrating a SWAT+ Model in the Cloud: Gauge by Gauge, Against USGS Streamflow

A SWAT+ model is checked against what the river actually did, and calibrating it by hand can take weeks.

1:05 · captions on by default

Transcript

A SWAT+ model is checked against what the river actually did, and calibrating it by hand can take weeks.

SWATGenX calibrates it against USGS streamflow, gauge by gauge, with a parallel particle swarm called MMPSO.

Pick a model, choose your gauges, a calibration window, and keep part of the record back for validation.

Each job runs on its own cloud machine, sized to the model.

The wizard shows the estimated cost before you launch, and each run is charged at standard AWS rates from your calibration credit.

While it runs, the dashboard shows the swarm converging, and the held-out years show whether the fit holds.

Wall time follows basin size: the catalog estimates under half an hour for a small basin and about a day for a very large one.

Cloud calibration is available on every plan at swatgenx.com.

Credits

Observations: USGS streamflow. MMPSO: Rafiei et al. 2022, Environmental Modelling & Software 149:105312. Wall-time figures are the catalog's derived estimates. Narration: synthetic voice; the name is the July film's own recording.

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