GGSD Program Details for RETC

RETC

Category	Hydraulic properties
Publisher	USDA Salinity Laboratory
Platform	DOS, Win3x
Status	Public domain
Description	RETC uses theoretical methods to predict the soil water retention curve and the hydraulic conductivity curve from measured soil water retention data. It uses several analytical models to estimate water retention, unsaturated hydraulic conductivity or soil water diffusivity for a given soil. It includes the parametric equations of Brooks-Corey and van Genuchten, which are used in conjunction with the theoretical pore-size distribution models of Mualem and Burdine to predict unsaturated hydraulic conductivity from observed soil water retention data. RETC can be used in a forward mode and in a parameter fitting mode. In the forward mode it estimates the soil-water retention curve and hydraulic conductivity; in the parameter fitting mode it determines the analytical model parameters.
Cost	Free on WWW
Data formats supported	None stated
Supplier in United States of America	International Ground Water Modeling Center
Supplier in United States of America	Scientific Software Group
Supplier in United States of America	US Environmental Protection Agency
Supplier in United States of America	USDA Salinity Laboratory