Watershed Modeling System (WMS)
Watershed Modeling System (WMS): A broad watershed toolkit with groundwater interaction modeling, not a standalone groundwater simulator. Ranked #4 of 11 in Groundwater Modeling Software by our editors (7.6/10); pricing: Free plan · paid from $3,990; best for watershed teams modeling surface-water interactions.
At a glance
- Editor score7.6 / 10
- PricingFree plan · paid from $3,990
- Best forWatershed teams modeling surface-water interactions
- Free planYes
- Flow modeling methodFinite-difference
- Facts checked25 Sep 2026
Where it wins
- Delineates watersheds and sub-basins from terrain data.
- Connects GIS workflows with hydrologic and hydraulic modeling.
- GSSHA supports 2D groundwater–surface-water interaction and contaminant modeling.
Where it doesn't
- Groundwater modeling is centered on integrated GSSHA, not standalone simulation.
- Runs on Windows as desktop software.
- Paid editions start at $3,990 one-time.
Our verdict on Watershed Modeling System (WMS)
Watershed Modeling System (WMS) is Windows desktop software for building and analyzing watershed models. It is aimed at teams working across terrain and GIS data, watershed delineation, hydrology, hydraulics, and floodplain mapping. Groundwater is part of that broader scope: the integrated GSSHA model can represent two-dimensional groundwater–surface-water interaction and contaminant transport. WMS is therefore a better fit for watershed studies that include those processes than for work centered on standalone groundwater simulation.
Its model interfaces are a notable part of the workflow. WMS supports GSSHA alongside HEC-HMS, HEC-RAS, EPA-SWMM, HSPF, CE-QUAL-W2, and HY-8; capabilities vary by edition. The feature set spans automated watershed and sub-basin delineation, GIS import and export, hydrologic model setup and parameter computation, floodplain mapping, and storm-drain network modeling with EPA-SWMM exchange. That breadth can suit projects moving between surface-water analysis and related models, while teams seeking a dedicated groundwater simulator may find the watershed focus too broad and the groundwater capability too specific to GSSHA.
According to the vendor’s published plans, Community is free. Paid one-time license prices begin with Floodplain at $3,990 for Local or $5,985 for Flex; Municipal is $5,740 Local or $8,610 Flex, and Premium is $8,660 Local or $12,990 Flex. These plans are identified by edition and license type, so buyers should match the needed capabilities to the appropriate edition. WMS lists phone, email, community, and documentation support. Choose it when watershed, GIS, floodplain, and surface-water interactions belong in one desktop workflow; consider a more groundwater-focused product when groundwater simulation is the primary requirement.
Watershed Modeling System (WMS) pricing
All 7 Watershed Modeling System (WMS) plans and prices →
Watershed Modeling System (WMS) fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Flow modeling method | Finite-difference |
| Transport modeling | Yes |
| Surface-water coupling | Yes |
| Model dimensions | 2d |
| GIS data exchange | Yes |
| Supported platforms | Windows |
| Deployment | Desktop |
| Platforms | Windows |
| Support | Phone, Email, Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: GSSHA, HEC-HMS, HEC-RAS, EPA-SWMM, HSPF, CE-QUAL-W2 … |
| Pricing | Free plan · paid from $3,990 (source) |
| Website | aquaveo.com |
| Facts checked | 25 Sep 2026 |
Watershed Modeling System (WMS) integrations
Watershed Modeling System (WMS) lists 7 integrations on its own site.
- GSSHA
- HEC-HMS
- HEC-RAS
- EPA-SWMM
- HSPF
- CE-QUAL-W2
- HY-8
Alternatives to Watershed Modeling System (WMS)
- MODFLOW 6A free, open-source model for 3D groundwater flow, transport, and coupled simulations.9.0
- ModelMuseFree Windows GUI for preparing groundwater model inputs, not a simulator itself.8.5
- FREEWATA free, GIS-centered modeling environment spanning groundwater simulation, analysis and planning.8.2
See all Watershed Modeling System (WMS) alternatives →
Watershed Modeling System (WMS) vs the competition
- Watershed Modeling System (WMS) vs MODFLOW 6
- Watershed Modeling System (WMS) vs ModelMuse
- Watershed Modeling System (WMS) vs FREEWAT
- Watershed Modeling System (WMS) vs SUTRA
- Watershed Modeling System (WMS) vs PFLOTRAN
- Watershed Modeling System (WMS) vs MODFLOW-USG
Compare Watershed Modeling System (WMS) with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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