Download

http://srtm.csi.cgiar.org/srtmdata/

QGIS 3

https://qgis.org/en/site/forusers/download.html

QGIS

EPANET

https://github.com/OpenWaterAnalytics/EPANET/releases

EPANET MATLAB Toolkit

https://github.com/OpenWaterAnalytics/EPANET-Matlab-Toolkit/releases