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SWRC Fit can fit several soil hydraulic models to measured soil water retention data. Copy your soil water retention data in the textbox below and press "Calculate" button. Before you use your original data you can see how it works by selecting a sample data from the pulldown menu. Read more instruction.

Description (NS: Not Specified)
Soil sample
Soil texture
Your name

Model selection
Brooks and Corey
van Genuchten
Fredlund and Xing [New!]

Calculation option
θr = 0

Figure option
Show only one model

Soil Water Retention Curve


Please cite this paper when you publish your work using this program, SWRC Fit. Researches conducted with SWRC Fit.

BibTeX and EndNote files are also available.

Sample output

Unimodal model Bimodal model

Download / Document



Here you can find a list of questions and answers about SWRC Fit. You can submit your own question by getting the accout of GitHub (use the green "Sign up" button) and pressing the green "New Issue" button. Please select the label of "question". It is preferable to send your question publicly this way, because other people having the same question can find answer on the web. However, if your question is confidential, please contact me by email. You can find my email address in this paper.

Persistent URL of this page is http://purl.org/net/swrc/. (What is Persistent URL?)

Author: Katsutoshi Seki