SoilVision Systems Ltd. has spent years collecting high-quality unsaturated soil data from sources all over the world. Our database now contains data on over 6200 soil samples. 98% of these soil samples have a soil-water characteristic curve measured in a laboratory. The soil database also contains saturated permeability (hydraulic conductivity) data on over 2500 soils as well as unsaturated permeability data on over 700 soils.

It is crucial to have an accurate description of unsaturated soil properties when performing finite element modeling of water and contaminant flow through the unsaturated soil zone. Methods for estimating unsaturated soil properties may not always be reliable. The use of the database contained in the SoilVision software can confirm the potential variability of your unsaturated soil properties. Groups of soils may be selected and plotted together to give a comprehensive idea of the variability of the soil-water characteristic curve. Determination of the air entry value (AEV) or the residual water content with increased accuracy is now possible.


  • Estimate unsaturated soil properties through 11 theoretical methods
  • Database of over 6200 soils
  • SVFlux™ seepage modeling software can import soil hydraulic properties
  • Export of material properties in MSExcel format for entry into SVHeat™
  • Sieve/Hydrometer Data Storage
  • SWCC / Oedometer / Permeability data entry
  • Professional reporting




SoilVision™ is currently being used by universities, government agencies, and consultants around the world. Our clients include...


SoilVision is a valuable program which assists in the design of soil cover systems for waste management faculties such as landfills, tailing deposits and waste rock dumps. In many cases the soil-water characteristic curves and hydraulic conductivity values for the potential soils which may be used for construction are not available during the early stages of design. We use SoilVision to estimate the properties on the basis of the grain-size distribution and other simple index properties. This allows preliminary analysis to proceed almost immediately. The optimum soils may be selected for the more detailed and time-consuming testing. In many cases it is possible to provide a complete design while testing only a limited number of samples to confirm soil properties.

G.W. Wilson, Ph.D.
Department of Civil Engineering
University of British Columbia

The power of SoilVision is in its large database of soil-water characteristic curves, and the fact that this database can be added to by the user. The "query" option allows grouping of soils with similar characteristics, such as grain-size distribution and classification. SoilVision is a valuable tool for use in unsaturated soil studies.

Claudia E. Zapata, Ph.D.
Arizona State University

I am currently using Soilvision to estimate hydraulic conductivity in areas where we have limited soil data and usually only estimates of soil texture. We are using the database of similar textures to interpolate soil moisture curves for input into drainage models to estimate impacts of drainage ditches to nearby wetland hydrology.

Chris Noble,
Geotechnical Engineer