A way to view a java applet from USGS.gov for modern macOS devices with browsers that no longer support java applets. For more information please visit blog post here: https://adamargyle.wordpress.com/2020/04/21/supporting-java-applets-in-macos-catalina/
- Install Open JDK version 8 from Amazon Corretto: https://corretto.aws/downloads/latest/amazon-corretto-8-x64-macos-jdk.pkg
- Download TopoDrive and ParticleFlow from USGS.gov: https://water.usgs.gov/nrp/gwsoftware/tdpf/tdpf1_0web.tar.gz
- Run bash scripts, .command files or easiest is to run the .app files