MWSWAT 2.3 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. This free software is a product of WaterBase. This PC program works fine with 32-bit versions of Windows Vista/7/8/10/11. The program relates to Photo & Graphics Tools. The following versions: 2.3, 2.2 and 2.1 are the most frequently downloaded ones by the program users.
From the developer:
MWSWAT is an interface to the Soil and Water Assessment tool SWAT. It allows you to set up and run SWAT from data freely available from the internet, or from your own data. MWSWAT comes as a plugin for MapWindow, an Open Source GIS system which runs under the Windows operating system.
You may want to check out more software, such as MWSWAT2012, which might be related to MWSWAT.