WWHM3 3.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following version: 3.0 is the most frequently downloaded one by the program users.
The actual developer of the free software is Clear Creek Solutions. Commonly, this program's installer has the following filenames: wwhm2012.exe and wwhm3.exe etc. The program is included in Education Tools. 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. You can run WWHM3 on Windows 7/8/10/11 32-bit.
From the developer:
The Western Washington Hydrology Model (WWHM) has been created to size stormwater detention and water quality facilities so that they meet the Washington State Department of Ecology standards.
You can create and run scenarios based on various event that may occur.
You may want to check out more software, such as Avantage BPM Foundation, Adding Machine or gitoolbox, which might be related to WWHM3.