Opening G01 Files

The G01 file type is primarily associated with HEC-RAS.

G01	File extension: G01
	File type:	data file

What is a G01 file?

G01 files mostly belong to HEC-RAS. G01 files are used as hydraulic modeling geometry data files within the HEC-RAS software.

Format: They are an internal file format designed specifically for storing geometry data.

Content: The file contains river cross-section details, coordinate points, and terrain profiles needed for hydraulic studies.

Usage: Hydraulic engineers use these files for water flow and river analysis through HEC-RAS.

FilExt.com tip: For more details, visit the HEC-RAS official website.

How to open a G01 file

You need a suitable software like HEC-RAS to open a G01 file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your G01 file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a G01 file directly in the browser:. Just drag the file onto this browser window and drop it.

Online G01 Text Viewer

Choose your .g01 file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert G01 files:

HEC-RAS
See the previous paragraphs to learn more about the main application. G01 files are often referred to as HEC-RAS data files because this type of file is primarily created or used by this software.
HEC-RAS (Geometry File) by U.S. Army Corps of Engineers
Hydrologic Engineering Centers River Analysis System (HEC- RAS) is a one-dimensional steady flow hydraulic model designed to aid hydraulic engineers in channel flow analysis and floodplain determination. The results of the model can be applied in floodplain management and flood insurance studies. These files can have extensions from G01 through G99. The identifying characters used for this association are - Hex: 47 65 6F 6D 20 54 69 74 6C 65 3D, ASCII: Geom.Title=.
MicroSim PCBoard Photoplot Artwork File by Cadence
The number is the page number within the job.

G01 file format:

The file format, which is the arrangement and type of data in a file, determines which program can open the file. Each file format has a unique extension and almost always a unique signature. For example, Microsoft Word documents have the extension .docx and the signature (usually the first 3 characters in this file) PK. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. Knowledge is power - this also applies when dealing with unknown or faulty files. Our analysis of the G01 files produces the following result:

G01 is not a common file extension and is used by a few programs, each with its own file format. The file formats most commonly found in G01 files are:

55% of all G01 files belong to HEC-RAS Geometry. These files are text files, so they contain words and text. G01 files are between 1 KB and 3 MB in size. The file type was developed 10 years ago and is still in use today. The keywords Geom Title, Viewing Rectangle=, River Reach, Reach XY and Program Version=4.10 are typical for these files. The file name Backup.g01 is characteristic of these files. Files like these are about modelo and river.
8% of all G01 files save the data in config file format. A configuration file is used by computer software to store settings. It consists of a text-based content with a structure and syntax comprising key–value pairs for properties, and sections that organize the properties. These files are plain text, which means they can be viewed with any text editor such as Windows Editor, Nano for Linux, and TextEdit for macOS. The file size is in the range of 2 KB to 37 KB. The following keywords are characteristic: CAPtion=Project1, CLIENT=Client1, ENGineer=Engineer1, ORGanization=ACECOMS, RCDESIGNCODE=ACI-318-95, RCDESIGNMETHOD=USD, REBARSETName=Metric, TITLE=Job1, TYPE=ProjectInfo and UNITSName=SI.

All other G01 files (37%) have no consistent format. If you want to find out what your G01 file contains, drag and drop it onto this page.

Technical Data for G01 File Extension

File classification:

Data

Identifier:

Hex: 47 65 6F 6D 20 54 69 74 6C 65 3D, ASCII: Geom.Title= (provided by TrID database)

Related files:

g02, prj, cas, inp, ras, go1, f01, o01, designer, p01, hdf, r01, zip, gdb, dsp, rar, g03, g05

a g01 data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with G01 files

Associate the G01 file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest G01 file format. Search, therefore, e.g. on the manufacturer website after an available HEC-RAS update.
To make sure that your G01 file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .G01 file online - secure, fast, and no downloads needed.