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FEQinput—An editor for the full equations (FEQ) hydraulic modeling system

October 30, 2017


The Full Equations Model (FEQ) is a computer program that solves the full, dynamic equations of motion for one-dimensional unsteady hydraulic flow in open channels and through control structures. As a result, hydrologists have used FEQ to design and operate flood-control structures, delineate inundation maps, and analyze peak-flow impacts. To aid in fighting floods, hydrologists are using the software to develop a system that uses flood-plain models to simulate real-time streamflow.

Input files for FEQ are composed of text files that contain large amounts of parameters, data, and instructions that are written in a format exclusive to FEQ. Although documentation exists that can aid in the creation and editing of these input files, new users face a steep learning curve in order to understand the specific format and language of the files.

FEQinput provides a set of tools to help a new user overcome the steep learning curve associated with creating and modifying input files for the FEQ hydraulic model and the related utility tool, Full Equations Utilities (FEQUTL).

Publication Year 2017
Title FEQinput—An editor for the full equations (FEQ) hydraulic modeling system
DOI 10.3133/fs20173072
Authors David S. Ancalle, Pablo J. Ancalle, Marian M. Domanski
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Fact Sheet
Series Number 2017-3072
Index ID fs20173072
Record Source USGS Publications Warehouse
USGS Organization Illinois Water Science Center