SWAT+ Watershed Modeling Across the United States | SWATGenX
National datasets, consistent SWAT+ assembly, and state-level context — each guide is backed by committed snapshot metadata, not a live catalog.
SWATGenX clips and stitches the same CONUS-grade sources — WBD/HUCs, NHDPlus-HR hydrography, PRISM weather, NLCD land cover, gSSURGO soils, and USGS context — into downloadable SWAT+ Editor packages. These pages explain why modeling matters regionally and highlight a representative basin while staying independent of day-to-day changes on the public example-model list.
Available state guides
Explore the product
Methodology & provenance · Watershed Explorer · Example models
Data backbone (citations & resolutions):
- 16,000+ USGS stations — live context via USGS Water Services (instantaneous values often ~15-minute; see USGS for provisional data caveats)
- NHDPlus HR — built from 1:24,000 NHD, 10 m 3DEP, and WBD; USGS cites on the order of ~27 million flowlines vs ~3 million in NHDPlus V2 (USGS NHDPlus HR)
- PRISM gridded climate (~4 km cells; PRISM defines a “day” as 24h ending 12:00 GMT); NLCD land cover 30 m; gSSURGO soils (gridded SSURGO per NRCS); NSRDB solar/meteorology nominally ~4 km (≈0.038°), 30-minute series — SWATGenX may resample/regrid for operations; see methodology for lineage