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Head-to-head · Groundwater Modeling Software

Watershed Modeling System (WMS) vs MODFLOW-USG

  • Updated Sep 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Watershed Modeling System (WMS) #4 in Groundwater Modeling Software 7.6/10 Free plan · paid from $3,990 Free plan✓ 3 of 3 features Visit Aquaveo
MODFLOW-USG #7 in Groundwater Modeling Software 6.9/10 Free plan Free plan✓ 0 of 3 features Visit USGS

Watershed Modeling System (WMS) leads on 3 checks, MODFLOW-USG on 0, and 1 is even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreWatershed Modeling System (WMS) · 7.6/10
  • Free planboth
  • Most featuresWatershed Modeling System (WMS) · 3 of 3

Watershed Modeling System (WMS) scores higher on our rubric for groundwater modeling software: 7.6 against 6.9 out of 10; our editors rank them #4 and #7.

Watershed Modeling System (WMS) offers transport modeling; MODFLOW-USG doesn't publish it. Watershed Modeling System (WMS) offers surface-water coupling; MODFLOW-USG doesn't publish it. Watershed Modeling System (WMS) offers gis data exchange; MODFLOW-USG doesn't publish it.

Watershed Modeling System (WMS) is the better fit for watershed teams modeling surface-water interactions. MODFLOW-USG is the better fit for unstructured grids and complex well or conduit systems.

  • Watershed Modeling System (WMS) fits best

    Watershed teams modeling surface-water interactions

  • MODFLOW-USG fits best

    Unstructured grids and complex well or conduit systems

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Side by side

Feature Watershed Modeling System (WMS) 7.6/10 Visit ↗ MODFLOW-USG 6.9/10 Visit ↗
At a glance
Editor score 7.6 6.9
Ranking #4 in Groundwater Modeling Software #7 in Groundwater Modeling Software
Best for Watershed teams modeling surface-water interactions Unstructured grids and complex well or conduit systems
Pricing model Free plan + paid Free
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Desktop Self-hosted
Support Phone, Email, Community, Docs Email
Built for Small business, Mid-market, Enterprise Mid-market, Enterprise
Features Watershed Modeling System (WMS) 3/3 · MODFLOW-USG 0/3
Transport modeling ✓ (best) Not published
Surface-water coupling ✓ (best) Not published
GIS data exchange ✓ (best) Not published
Specs
Flow modeling method Finite-difference Finite-difference
Model dimensions 2d Not published
Supported platforms Windows Not published
Our review
Pros
  • 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.
  • Handles structured, unstructured, nested, and multi-shape grids
  • Models arbitrary cell connectivity with Ghost Node Correction
  • Represents multi-node wells, karst conduits, tile drains, and networks
Cons
  • Groundwater modeling is centered on integrated GSSHA, not standalone simulation.
  • Runs on Windows as desktop software.
  • Paid editions start at $3,990 one-time.
  • Self-hosted deployment requires local installation and management
  • Support is provided through email rather than broader channels
  • Flow-focused scope suits fewer transport and surface-water workflows
Our verdict

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.…

Read the review →

MODFLOW-USG is a USGS groundwater-flow model for teams working with structured or unstructured grids, nested layouts, multiple cell shapes, and complex subsurface connections. Its control-volume finite-difference formulation allows each…

Read the review →
  1. Watershed Modeling System (WMS)Groundwater Modeling Software 7.6Free plan · paid from $3,990
  2. MODFLOW-USGGroundwater Modeling Software 6.9Free plan

Strengths and trade-offs

  • Watershed Modeling System (WMS) — 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.

  • MODFLOW-USG — where it wins

    • Handles structured, unstructured, nested, and multi-shape grids
    • Models arbitrary cell connectivity with Ghost Node Correction
    • Represents multi-node wells, karst conduits, tile drains, and networks

    Where it doesn't

    • Self-hosted deployment requires local installation and management
    • Support is provided through email rather than broader channels
    • Flow-focused scope suits fewer transport and surface-water workflows
  • Watershed Modeling System (WMS)7.6/10 · Free plan · paid from $3,990

    A broad watershed toolkit with groundwater interaction modeling, not a standalone groundwater simulator.

    Visit AquaveoFull verdict →
  • MODFLOW-USG6.9/10 · Free plan

    A free, self-hosted MODFLOW variant for irregular grids and specialized groundwater systems.

    Visit USGSFull verdict →

More comparisons

All groundwater modeling software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update