Automated U.S. watershed modeling
Access SWATGenX
SWATGenX is in controlled release. Free access supports map exploration and example outputs. Basic access supports station-scale SWAT+ evaluation, while Pro access is available by request for larger basin workflows and optional calibration.
- Free map & watershed screening
- Basic signed-in evaluation
- Pro demo by request
- Limits mirror the live app
Typical limits (at a glance)
Illustrative caps for planning — your live account may differ. Basic uses UTC-day windows; typical Pro demo grants use a UTC calendar month.
| Basic (typical) | Pro demo (typical) | |
|---|---|---|
| SWAT+ model orders | Up to 5 / UTC day | Up to 100 / month |
| Watershed PDF reports | Daily cap (see app) | Up to 300 / month |
| HUC8 whole-basin | — | ✓ |
SWATGenX is a production-grade system in controlled release. It is shared for demonstration, technical testing, and early use while capabilities scale. Access is structured to keep performance reliable, compute usage predictable, and feedback actionable. Access levels support everything from open exploration to advanced workflow testing, including station-scale SWAT+ generation, HUC8 whole-basin builds, and optional calibration paths under extended demo access.
Want evidence before you reach out? See real example SWAT+ models and outputs from completed runs (basin metrics, channel counts, observed timing, and optional demo downloads).
How access works today: Basic is the default signed-in level after you create an account—use it to evaluate SWATGenX under the limits below (mirrored in the app). Pro is extended demo access we grant selectively so technical users can test larger workflows—HUC8 whole-basin builds, higher throughput, or calibration paths—under real operating conditions. Request it case by case: email info@swatgenx.com with your affiliation and what you want to evaluate.
Basic is intentionally positioned for exploratory and small-geographic-scale workflows. Because SWATGenX uses high-resolution NHDPlus HR hydrography, model complexity can grow rapidly with watershed size, stream-network density, connected lakes, and HRU count. Access limits help keep the current computational infrastructure cost-efficient while maintaining predictable turnaround times and reliable evaluation workflows. Optional calibration and validation are implemented in the current version of SWATGenX, but they are managed separately from model and report quotas. At this stage of production, these workflows are enabled through extended access rather than anonymous self-service.
At a glance
Same entitlements as the cards below — faster to scan.
| Free | Basic | Pro | |
|---|---|---|---|
| CONUS map & watershed screening | ✓ | ✓ | ✓ |
| Signed-in PDF watershed reports | — | ✓ | ✓ |
| SWAT+ (HUC12 / station-centered) | — | ✓ (capped) | ✓ |
| SWAT+ HUC8 whole basin | — | — | ✓ |
| Calibration & validation | — | — | ✓ |
“Capped” = up to 15 contributing HUC12 units and 5 SWAT+ orders per UTC day — a complexity guardrail for high-resolution NHDPlus HR workflows, not a low-fidelity mode.
Access levels in detail
Free
Best for trying the map, streamflow classification, and basin context before you create an account.
- CONUS map with streamflow status classification
- Station, catalog HUC12, and HUC8 exploration with streamflow and rainfall context (where exposed)
Basic
Best for signed-in reporting and station-scale SWAT+ under predictable complexity limits.
- PDF watershed reports, floodplain and population exposure, cropland and stream layers
- SWAT+ for HUC12 / USGS gage–centered watersheds
- Up to 15 contributing HUC12 subbasins per order; up to 5 SWAT+ orders per UTC day
- No HUC8 whole-basin orders or calibration/validation
Pro
Best for evaluation that needs broader limits than Basic—HUC8 whole-basin SWAT+, repeated technical runs, and optional cloud calibration/validation when enabled for your demo.
- Everything in Basic, plus HUC8 whole-basin SWAT+ orders
- No Basic HUC12 count or daily order caps; monthly SWAT+ model and watershed-report quotas apply (see Your access in the app — typical 100 models and 300 PDF reports per UTC month, no rollover)
- Optional calibration and validation with multi-year outputs when enabled (separate accounting from model/report quotas; not a public self-service feature from this page)
Limits follow live app configuration and may change; this page is updated when entitlements change.
FAQ
What is the Basic access level?
Basic is the default signed-in level for hands-on evaluation with a SWATGenX account. Limits on this page (and in the app) keep R&D infrastructure and queues predictable while capabilities grow. Email info@swatgenx.com if you have access questions or need a broader demo.
How is Pro access handled?
Pro is extended demo access with higher limits so technical users can stress-test larger workflows—whole-basin runs, higher throughput, or calibration paths—while SWATGenX is still under active development. It is granted case by case when there is a clear technical fit, not enabled from a storefront on this site. Email info@swatgenx.com with your affiliation and what you want to evaluate.
Do you support teams or shared capacity?
Team, institutional, or larger-capacity evaluation setups are handled by request during controlled release. Email info@swatgenx.com with your affiliation, intended workflow, and expected model scale.
Why are Basic SWAT+ orders capped?
Caps keep cloud cost and queue time predictable for exploratory use, especially because high-resolution NHDPlus HR hydrography can produce dense model networks even when a watershed does not look large on a map. Pro removes Basic HUC12 count and daily order caps, uses monthly SWAT+ model and watershed-report quotas (see Your access in the app for your live limits and reset window), and unlocks HUC8 whole-basin orders. Calibration and validation workflows are not publicly available as self-service features at this time; when enabled on Pro, they are accounted for separately from model/report quotas.
What are Pro model and report limits?
During the R&D phase, typical Pro demo grants include up to 100 SWAT+ model orders and 300 watershed PDF reports per UTC calendar month. Exact numbers follow your access record in the app. Quotas and windows may change as we tune performance; unused quota does not roll over. Email info@swatgenx.com if your evaluation needs different limits.
Do limits ever change?
Yes — entitlements follow live app configuration. This page is updated when backend limits change; the in-app modal text is the other place we mirror enforceable rules.