Build in pieces: cut a large basin into smaller models
Some basins are too large to build as one SWAT+ model here. This river network has over fifty thousand reaches, and one model holds up to thirty thousand. Build in pieces cuts it into four models, each its own build, along the lines between its smaller watersheds. Cuts prefer a stream gauge, and here each piece ends at one. One basin, several models, cut where the watersheds already divide.
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Transcript
Some basins are too large to build as one SWAT+ model here. This river network has over 50,000 reaches, and one model holds up to 30,000. Build in pieces cuts it into four models, each its own build, along the lines between its smaller watersheds. Cuts prefer a stream gauge, and here each piece ends at one.
One basin, several models, cut where the watersheds already divide.
Credits
Recorded on the live SWATGenX Watershed Explorer on 2026-10-18, signed out. Shows the Upper Yuba basin, California (HUC8 18020125) and the four pieces the Explorer proposes; nothing is built or ordered. Watersheds and river network: USGS NHDPlus HR and its Watershed Boundary Dataset; stream gauges: USGS NWIS. Basemap: © OpenStreetMap contributors, © OpenMapTiles. Narration: synthetic voice.