USGS Groundwater Information
New & Noteworthy
USGS in Your State
USGS Water Science Centers are located in each state.
CFP: Documentation of a Conduit Flow Process for MODFLOW-2005
By W. Barclay Shoemaker (U.S. Geological Survey, Fort Lauderdale, Florida),
The conduit flow process for MODFLOW-2005 (CFP) has the ability to simulate turbulent or laminar groundwater flow conditions by:
Conduit flow pipes (CFPM1) may represent:
Pipes can be fully or partially saturated under laminar or turbulent flow conditions, but should be generally horizontal and full if vertical.
Preferential flow layers (CFPM2) may represent:
In this second case, the input data are effective parameters, such as a very high hydraulic conductivity, representing multiple features.
The Conduit Flow Process for MODFLOW-2005 was developed with the support of the USGS Groundwater Resources Program.
CFP Information and Downloads
First official release version 1.0 was released for publication April 14, 2008.
Current version 1.8.00 was released for publication February 23, 2011. Refer to the release.txt in the download file for complete release history.
Software Downloads and Documention
Download CFP version 1.8 (13.5MB ZIP file). File includes:
A list of reports & articles is also available.
Points of Contact and Support
Support is provided for correcting bugs and clarification of how the code is intended to work. Only limited assistance can be provided for applying CFP to specific problems by contacting USGS online or by directing correspondence to the points of contact listed below.
User Email List
If you want to be alerted to updates in the CFP, please contact W. Barclay Shoemaker.
Related USGS Software Resources
USGS computer programs related to CFP include the following:
Other USGS Groundwater Software
The USGS develops groundwater , water-quality, surface-water, and other water-resources software for use by the USGS in fulfilling its mission. Most of this software is available online for download at no charge.
Disclaimers and Notices
This software has been approved for release by the U.S. Geological Survey (USGS). Although the software has been subjected to rigorous review, the USGS reserves the right to update the software as needed pursuant to further analysis and review. No warranty, expressed or implied, is made by the USGS or the U.S. Government as to the functionality of the software and related material nor shall the fact of release constitute any such warranty. Furthermore, the software is released on condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from its authorized or unauthorized use. Also refer to the USGS Water Resources Software User Rights Notice for complete use, copyright, and distribution information.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Software License and Purchase Information
This software is a product of the U.S. Geological Survey, which is part of the U.S. Government.
This software is freely distributed. There is no fee to download and (or) use this software.
Users do not need a license or permission from the USGS to use this software. Users can download and install as many copies of the software as they need.
As a work of the United States Government, this USGS product is in the public domain within the United States. You can copy, modify, distribute, and perform the work, even for commercial purposes, all without asking permission. Additionally, USGS waives copyright and related rights in the work worldwide through CC0 1.0 Universal Public Domain Dedication (https://creativecommons.org/publicdomain/zero/1.0/ ).
Note: Some or all of this information is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of the free Adobe Reader from the Adobe web site. Visit https://www.adobe.com/accessibility/ for free tools that allow visually impaired users to read PDF files.