GMS Supported Models & Utilities

  • GMS Models
  • GMS Utilities

MODFLOW-2005, 2000, 96, 88

CategoryTypeMethodDescription
Groundwater flow modeling3DFinite differenceMODFLOW is a cell-centered, saturated flow model that can perform both steady state and transient analyses and has a wide variety of boundary conditions and input options.
MODFLOW

MODFLOW-USG

CategoryTypeMethodDescription
Groundwater flow modeling3DFinite volumeMODFLOW-USG supports a wide variety of structured and unstructured grid types, including nested grids and grids based on prismatic triangles, rectangles, hexagons, and other cell shapes. Flexibile grid designs can be used to focus resolution along rivers & around wells and speed up model runtimes.
MODFLOW-USG

MODFLOW-NWT

CategoryTypeMethodDescription
Groundwater flow modeling3DFinite differenceMODFLOW-NWT is a version of MODFLOW based on MODFLOW-2005 that provides a different formulation of the groundwater flow equation designed to solve models concerned with wetting and drying of cells.
MODFLOW-NWT

MODFLOW-LGR

CategoryTypeMethodDescription
Groundwater flow modeling3DFinite differenceMODFLOW-LGR is a version of MODFLOW based on MODFLOW-2005 that offers local grid refinement by using multiple grids to provide model refinement in one or more areas of the model without having to refine the entire model.
MODFLOW-LGR

MODPATH

CategoryTypeMethodDescription
Groundwater transport modeling3DFinite differenceMODPATH is a particle tracking code that is used in conjunction with MODFLOW. By designating the location of a set of particles, they can be tracked either forward or backward in time.
MODPATH

MT3DMS

CategoryTypeMethodDescription
Groundwater transport modeling3DFinite differenceMT3DMS is a modular three-dimensional transport model for the simulation of advection, dispersion, and chemical reactions of dissolved constituents in groundwater systems.
MT3DMS

PHT3D

CategoryTypeMethodDescription
Groundwater transport modeling3DFinite differencePHT3D is a multicomponent transport model for three-dimensional reactive transport in saturated porous media. PHT3D is a combination of MT3DMS and PHREEQC-2.
PHT3D

SEAWAT

CategoryTypeMethodDescription
Groundwater transport modeling3DFinite differenceSEAWAT is a coupled version of MODFLOW 2000 and MT3DMS and is designed to simulate three-dimensional, variable-density ground-water flow and multi-species transport including solute and heat transport simultaneously.
SEAWAT

RT3D

CategoryTypeMethodDescription
Groundwater transport modeling3DFinite differenceRT3D is a multi-species reactive transport model and is a modified version of MT3DMS that utilizes alternate Chemical Reaction packages. RT3D is well-suited for simulating natural attenuation and bioremediation.
RT3D

SEAM3D

CategoryTypeMethodDescription
Groundwater transport modeling3DFinite differenceSEAM3D is a reactive transport model based on the MT3DMS code and is used to simulate complex biodegradation problems involving multiple substrates and multiple electron acceptors.
SEAM3D

MODAEM

CategoryTypeMethodDescription
Groundwater flow & transport modeling2DAnalytical ElementMODAEM is an analytic element groundwater flow model that is defined by “analytic elements” rather than discritized cells as is the case with finite difference or finite element models resulting in a more simplified approach.
MODAEM

SEEP2D

CategoryTypeMethodDescription
Groundwater flow modeling2DFinite elementSEEP2D is a two-dimensional steady state groundwater model used to simulate saturated and unsaturated flow. The model is typically used on profile models (XZ models) such as cross-sections of earth dams or levees.
SEEP2D

UTEXAS

CategoryTypeMethodDescription
Slope stability modeling2Dn/aUTEXAS is a slope stability software package designed to analyze slope stability using the limit equilibrium method. The model computes a factor of safety against slope failure of dams or levees.
UTEXAS

FEMWATER

CategoryTypeMethodDescription
Groundwater flow & transport modeling3DFinite elementFEMWATER is a 3D finite element, density driven, flow and transport model used in saturated and unsaturated zones.
FEMWATER

FEFLOW

CategoryTypeMethodDescription
Groundwater flow & transport modeling3DFinite elementFEFLOW is 3D groundwater model capable of modelling fluid flow and transport of dissolved constituents and/or heat transport processes in the subsurface.
FEFLOW

TOUGH2

CategoryTypeMethodDescription
Unsaturated Groundwater and Heat Transport Modeling3DFinite differenceTOUGH2 is 3D groundwater and heat transport model capable of simulating the coupled transport of water, vapor, non-condensible gas, and heat in porous and fractured media.
TOUGH2

PEST & Parallel PEST

CategoryTypeMethodDescription
n/a3Dn/aPEST is a general purpose parameter estimation utility used to perform automated parameter estimation for MODFLOW models.
PEST

ZONEBUDGET

CategoryTypeMethodDescription
Groundwater flow modeling analysis3Dn/aZONEBUDGET is a USGS program that reads cell to cell flow data produced by MODFLOW and calculates water budgets for subregions of the modeled area.
ZONEBUDGET

SAMG Solver

CategoryTypeMethodDescription
n/a3Dn/aSAMG is a mulitgrid solver utility for MODFLOW. SAMG is the most efficient solver available for use with MODFLOW reducing computations by up to one to two magnitudes depending on the application and problem size.
SAMG Solver

T-PROGS

CategoryTypeMethodDescription
Stochastic subsurface modeling3Dn/aThe T-PROGS utility is used to perform transition probability geostatistics on borehole data.
T-PROGS