Category Hydraulic properties
Publisher  Virginia Tech (Civil Engineering) 
Platform DOS
Status Public domain
Description ONESTEP is a research code for the estimation of up to five unknown parameters in the van Genuchten soil hydraulic property model. The program requires measurements of cumulative outflow with time during one-step outflow experiments. The outflow data can be optionally supplemented with measurements of equilibrium moisture contents and pressure heads. The program combines a non-linear optimisation routine with a Galerkin finite-element model for the one-dimensional flow equation. Example data sets are provided, which can be copied and edited with a text editor for individual problems. The program results are output in text files.
Cost US Dollars 70
Data formats supported None stated
Supplier in United States of America  International Ground Water Modeling Center 

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