Vadose Zone Modeling: Web-Links

Modeling Software Distribution Sites:

Soil Modeling Software Collection, Internat. Soil Modeling Consortium
U.S. Salinity Laboratory: Vadose Zone Modeling Software
USGS, Groundwater / Vadose Zone Modeling Software
EPA, Center for Subsurface Modeling Support
EPA, Software for Environmental Awareness
International Groundwater Modeling Center, School of Mines, Colorado
Scientific Software Group (commercial)
Rockware, Inc. (commercial)
Richard Winston's Groundwater Modeling Page
Hydrology, Hydraulics, Water Quality(HHWQ) modeling resources blog

Vadose Zone Modeling Software (public domain/free of charge):

STANMOD (USDA) - 1D analytical transport model, inverse modeling, fitting, w/ GUI
HYDRUS-1D - 1D finite element, sat/unsat, flow, transport, heat, w/ GUI
VLEACH (EPA) - 1D finite difference, unsat flow & transport, screening model
VS2DI (USGS) - 2D finite difference, unsat flow & transport, heat flow, w/ GUI
VSAFT2 (Univ. of Arizona) - 2D finite element, sat/unsat flow, transport w/ GUI
R-UNSAT (USGS) - 2D analytical, unsat flow & transport, vapor/VOC, screening model
Johnson & Ettinger Models (CA DTSC) - vapor/VOC movement, screening model
Johnson & Ettinger Models (EPA) - vapor/VOC movement, web-based screening tool
SUTRA (USGS) - 2D/3D finite element, sat/unsat, variable density flow, transport, heat
TOUGH2 (Lawrence Berkeley National Laboratory)- 3D multiphase/unsat flow & trans.
ParFLOW (Lawrence Livermore National Laboratory) - 3D large grid sat/unsat flow
STOMP (Pacific Northwest National Laboratory) - 3D multiphase flow & trans.

Vadose Zone Modeling Software (commercial):

HYDRUS-2D - 2D finite element, sat/unsat, flow, transport, heat, w/ GUI
HYDRUS-2D/3D - fully 3D finite element, sat/unsat, flow, transport, heat, w/ GUI
SEVIEW SESOIL - 1D, unsat flow & transport, runoff, w/GUI, screening model
MODHMS (Hydrogeologic Inc) - MODFLOW based watershed model w/ unsat flow
MODFLOW-SURFACT (Hydrogeologic Inc) - MODFLOW w/unsat/multiphase flow
FEFlow (Wasy Ltd.) - 3D finite elements flow & transport & watershed, w/ GUI

Estimating Vadose Zone Properties - Soil Surveys, Databases, Software (public domain):

California Soil Surveys, Webtool (UC Davis) - CA Soil Surveys on the Web
WebSoilSurvey (USDA/NRCS) - Soil Surveys on the Web
Soil Datamart (USDA/NRCS) - Soil Survey documents, NRCS Soil Datamart
ROSETTA (USDA) - Estimates water retention, unsat K functions from basic soil data
NeuroMultiStep (UC Davis) - similar to Rosetta, Central Valley, California, soils, w/ GUI
UNSODA (USDA) - Database and program to estimate unsat properties
RETC (USDA) - A program to estimate unsaturated K from water retention data
Online Site Assessment Tool (EPA) - web calculators, conversions & resources

Chemicals Databases (public domain):

Online Site Assessment Tool (EPA) - web calculators, conversions & resources
Estimating Henry's Law constant (EPA) - estimate Henry's law constant on the web
Retardation Factor Calculator (EPA) - estimate retardation factor in soils
NIST Chemistry Webbook - lookup properties by chemical name or CAS number
PhysPro Databasee (Syracuse Research Corp.) - properties by CAS number
Chemfinder.com - lookup properties by chemical name or CAS number
PubChem - lookup properties by chemical name or CAS number
Chemindustry - lookup properties by chemical name or CAS number

Interesting Websites Related to Vadose Zone Modeling:

Vadose Zone Modeling - Vadose Zone Journal, Special Section, May 2008
Unsaturated Zone Hydrology for Scientists and Engineers, USGS Online Book
EPA Technical Guide to Soil Contamination Screening Tools
EPA Support for soil NAPL transport modeling and understanding
Modeling Software Reviews (Integrated Groundwater Modeling Center)