SUTRA vs PFLOTRAN

SUTRA8.2Visit PFLOTRAN8.0Visit

Higher score SUTRA #4 in Groundwater Modeling Software 8.2/10 Free plan Free plan✓ 3 of 3 features Visit USGS SUTRA

vs

PFLOTRAN #5 in Groundwater Modeling Software 8.0/10 Open source ✓ 1 of 3 features Visit PFLOTRAN

• SUTRA fits best

  Finite-element, density-dependent, or thermal models

• PFLOTRAN fits best

  Large-scale reactive transport and fractured media

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Side by side

Feature	SUTRA 8.2/10 Visit ↗	PFLOTRAN 8.0/10 Visit ↗
At a glance
Editor score	8.2	8.0
Ranking	#4 in Groundwater Modeling Software	#5 in Groundwater Modeling Software
Best for	Finite-element, density-dependent, or thermal models	Large-scale reactive transport and fractured media
Pricing model	Free	Free
Starting price	Free plan	Open source
Free plan	✓ (best)	Not checked yet
Free trial	—	—
Deployment	Desktop	Self-hosted
Platforms	Windows	Linux
Support	Docs, Email	Docs
Built for	Small business, Mid-market, Enterprise	Small business, Mid-market, Enterprise
Features SUTRA 3/3 · PFLOTRAN 1/3
Transport modeling	✓	✓
Surface-water coupling	✓ (best)	Not checked yet
GIS data exchange	✓ (best)	Not checked yet
Specs
Flow modeling method	Finite-element	Other
Model dimensions	Both	3d
Supported platforms	Windows	Linux
Our review
Pros	Models saturated and unsaturated flow in 2D or fully 3D domains Handles variable density, reactive solute, and thermal-energy transport Flexible finite-element grids with lake and freeze-thaw capabilities	Combines groundwater flow with reactive transport and geochemical reactions Parallel execution supports large-scale scientific simulations Models both porous and fractured subsurface media
Cons	Listed platform support is limited to Windows Reactive solute transport covers a single species Desktop deployment may not suit cloud-based team workflows	Linux is the only listed platform Self-hosted deployment requires managing the computing environment Documentation is the listed support channel
Our verdict	SUTRA is a USGS groundwater simulator for saturated and unsaturated flow with constant or variable density. It supports single-species reactive solute transport and thermal-energy transport in two-dimensional and fully three-dimensional… Read the review →	PFLOTRAN is an open-source simulation code for subsurface groundwater flow and reactive transport. It is aimed at researchers and technical teams constructing numerical models of groundwater movement, dissolved chemical species, and… Read the review →

Strengths and trade-offs

• SUTRA — where it wins

  • Models saturated and unsaturated flow in 2D or fully 3D domains
  • Handles variable density, reactive solute, and thermal-energy transport
  • Flexible finite-element grids with lake and freeze-thaw capabilities

  Where it doesn't

  • Listed platform support is limited to Windows
  • Reactive solute transport covers a single species
  • Desktop deployment may not suit cloud-based team workflows

• PFLOTRAN — where it wins

  • Combines groundwater flow with reactive transport and geochemical reactions
  • Parallel execution supports large-scale scientific simulations
  • Models both porous and fractured subsurface media

  Where it doesn't

  • Linux is the only listed platform
  • Self-hosted deployment requires managing the computing environment
  • Documentation is the listed support channel

• SUTRA8.2/10 · Free plan

  A free USGS simulator for advanced flow, transport, thermal, and lake modeling.

  Visit USGS SUTRAFull verdict →
• PFLOTRAN8.0/10 · Open source

  A parallel, open-source engine for large 3D groundwater and geochemical simulations.

  Visit PFLOTRANFull verdict →