Updates to Franz, D.D., and Melching, C.S., 1997, Full Equations (FEQ) model for the solution of the full, dynamic equations of motion for one-dimensional unsteady flow in open channels and through control structures: U.S. Geological Survey Water-Resources Investigations Report 96- 4240, 258 p.

Prepared by

Note: This document is separate from the U.S. Geological Survey report by Franz and Melching (1997). This description of enhancements and modifications to the Full Equations Model has not been approved by the Director of the U.S. Geological Survey.


RELEASE INFORMATION Release notes that are distributed with the FEQ software. Summarizes with brief descriptions selected modifications implemented in FEQ from March 1995 to January 1999.
Input Description Updates Section 13.3 Tributary Area Block-Tributary Area Tables
Section 13.3a Tributary Area Block-Tributary Area Tables
Section 13.5a Define Macros and Instructions Block-Macro and Instruction Definition
Section 13.6 Network-Matrix Control Block-Network-Matrix Table, Code 5
Section 13.6 Network-Matrix Control Block-Network-Matrix Table, Code 13
Section 13.9 Special-Output Locations Block-Special-Output Table
Section 13.10 Input Files Block-Input File Table
Section 13.11 Output Files Block-Output File Table
Section 13.12 Operation of Control Structures Block-Operation Tables
Section Updates Section Conservation of Momentum/Energy: Code 13


This documentation detailing enhancements and modifications to the Full Equations (FEQ) model has been prepared as an update to the U.S. Geological Survey Water Resources Investigations Report 96-4240, Full Equations (FEQ) Model for the Solution of the Full, Dynamic Equations of Motion for One-Dimensional Unsteady Flow in Open Channels and Through Control Structures (Franz and Melching, 1997). The version of FEQ that was documented was maintained at the state as of March 1995 during the documentation process so that the task could be completed. This update has been written order to document the development of FEQ since March 1995.

Enhancements and modifications are made to FEQ on a continuing basis for the following reasons:

1. Correction of errors detected in the software.

2. Addition of new features to the software.

3. Enhancements or modifications to existing features of the software as suggested by experienced users.

A maintenance file, RELEASE.TXT, is distributed with the code and contains brief descriptions of the modifications made to FEQ, the approximate date each modification was implemented, and the version number assigned to the software as a result of the change. This list of modifications has been maintained since 1994 and is the basis for this update to the documentation report, Franz and Melching (1997). The published documentation report was prepared as a hyperlinked Hypertext Markup Language (HTML) document and posted to the Internet in 1997.

This update documents and summarizes the modifications made to the software from March 1995 to January 1999. It is being distributed as an HTML document that is hyperlinked to the original documentation report. The maintenance file, RELEASE.TXT, is hyperlinked both to the original documentation report and to expanded text documenting the changes to the Section 13.0--Input Description for the Full Equations Model: Version 8.0 (Franz and Melching, 1997), if any, caused by the changes. Any changes made to the main text of the documentation report to describe the modifications in addition to that contained in the input description is hyperlinked to both the original documentation report and the RELEASE.TXT file.


These notes from the RELEASE.TXT file appear in an equal-spaced font because the ASCII input excerpts are more clear when presented in columns, and in some cases must always be entered in fixed fields. RELEASE.TXT is written in a more abbreviated and informal style than the detailed updates to the FEQ documentation report, and the ASCII text style is an indication of this.

The notes have been hyperlinked to the original documentation report and to the updated input description, and other selected update sections where available.