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USGS Water Resources Applications Software: OTIS

OTIS Download Page

Installation files for OTIS may be downloaded from this page.

Please consult the documentation and FAQ for additional information on software distribution and installation.

Follow these steps to download the OTIS installation files:

Step 1:  Enter your email address

Email Address:  

Note: Entry of your email address is optional. If you enter your email address we can contact you regarding new software releases and bug fixes. Your email address will not be shared with third parties.

Step 2:  Specify your operating system/hardware platform

Operating System/Hardware Platform:  


  1. The Windows/Intel version of OTIS should run under most versions of Microsoft Windows. Note, however, that the installation files available on this OTIS download page will not work if you're running the 64-bit version of Windows 7. OTIS users running 64-bit Windows 7 should leave this page and follow the installation instructions available here. OTIS users running 32-bit Windows 7 should continue the download process as described on this page.
  2. If your operating system/hardware platform is "Other", you will not be able to download the executable installation file in Step 3. See the OTIS documentation and FAQ for information on compiling the software.

Step 3:  Select the installation files you wish to download

Check the applicable boxes:

Download executable (not applicable if you specified "Other" in Step 2)
Download example applications
Download source code


  1. Most OTIS users will want to download the executable and example applications installation files. Pre-compiled executables are available for Linux/Intel, Solaris/SunWorkstation, and Windows/Intel; the source code installation file is therefore not needed for these operating systems/hardware platforms.
  2. If you specified "Other" in Step 2, you will not be able to download the executable installation file. You may therefore want to download the source code installation file for compilation purposes (see the OTIS documentation and FAQ).

Step 4:  Download the installation files

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Page Last Modified: Friday, 09-Dec-2016 18:15:45 EST