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UPW file extension

The table below provides useful information about the .upw file extension. It answers questions such as:

  • What is the .upw file?
  • What program do I need to open a .upw file?
  • How can the .upw file be opened, edited or printed?
  • How can I convert .upw files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ MODFLOW Upstream Weighting Package

UPW file is a MODFLOW Upstream Weighting Package. MODFLOW is the USGS's modular hydrologic model. MODFLOW is considered an international standard for simulating and predicting groundwater conditions and groundwater/surface-water interactions.
UPW format description not yet available
Category: Data files
Application: MODFLOW
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
UPW aliases:
UPW related links:
UPW related extensions:
MODFLOW Name Dataset

MODFLOW Grid Specification Data

MODFLOW Evapotranspiration Package

MODFLOW Discretization Package

MODFLOW Streamflow-Routing Package

MODFLOW Recharge Package

MODFLOW Newton Solver Data

MODFLOW Output Control Data

MODFLOW Well Package

MODFLOW Model Head Data

Other types of files may also use the .upw file extension.

🚫 The .upw file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

hpw, ipw, jpw, pw, ulw, upd, upe, ups, uw

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

UltraMixer Preset Data
VisualBoy Advance UPS Patch File
ArcGIS JPEG World File
Pathetic Writer Document
UPStart Export Data
CompuServe Home Page Wizard Document
UniPlot Graph
Unsigned Word RAW Audio Data
Program Update Information
U-Law Compressed Audio File

🔴 Can't open a .upw file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .upw file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .upw file extension, write to us!

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