Who publishes STANMOD?

Agricultural Research Service, part of Department of Agriculture, publishes this dataset on Data.gov.

How often is it updated?

The publisher does not list a schedule. The last update was on 11/21/2025.

How do I download it?

Use the official source link above to view or request the data.

Checked Oct 30, 2026

Federal dataTransportation

STANMOD

Name: STANMOD
Creator: Agricultural Research Service

Published by Agricultural Research Service · Updated 11/21/2025

Official source

Last updated: 11/21/2025
Update frequency: Not listed
Formats: Web only
Coverage: Nationwide; Federal data

About this dataset

STANMOD (STudio of ANalytical MODels) is a Windows based computer software package for evaluating solute transport in porous media using analytical solutions of the convection-dispersion solute transport equation. Version 1.0 of STANMOD includes the following models for one-dimensional transport problems: - CXTFIT 2.0 (Toride et al., 1995) - CFITM (van Genuchten,1980) - CFITIM (van Genuchten, 1981) - CHAIN (van Genuchten, 1985) Version 2.0 of STANMOD also includes the following models for two- and three-dimensional transport problems: - 3DADE (Leij and Bradford, 1994) - N3DADE (Leij and Toride, 1997) System Requirements: Intel Pentium processor, 16 Mb RAM, hard disk with at least 20 Mb free disk space, VGA graphics (SVGA with 256 colors recommended), MS Windows 95 or higher. Resources in this dataset: - Resource Title: STANMOD download page. File Name: Web Page, url: https://www.ars.usda.gov/research/software/download/?softwareid=102&modecode=20-36-15-00

Transportation

Files and access

Links open the official government source

https://www.ars.usda.gov/research/software/download/?softwareid=102&modecode=20-36-15-00ars.usda.govWeb page

Links open outside websites we do not control.

Frequently asked questions

Who publishes STANMOD?: Agricultural Research Service, part of Department of Agriculture, publishes this dataset on Data.gov.
How often is it updated?: The publisher does not list a schedule. The last update was on 11/21/2025.
How do I download it?: Use the official source link above to view or request the data.

Where this catalog comes from

Data.gov CatalogU.S. General Services Administration
State and local open data portalsSocrata Discovery API
State and city CKAN portalsCalifornia, Virginia, Boston, Houston and more
Government ArcGIS Hub sitesCity and county GIS data

Catalog checked 10/24/2026

We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.

Source: Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher