You will be able to find or download everything for the waterfall in the folder provided here. (http://www.mediafire.com/download/sh0im1a8t32pkxi/Waterfall.zip)
There is a 'README' notepad document listing what files go where.
As for the waterfall smoke, the image file can be found here. (http://i59BannedImageSite/2l9gvtc.png) This goes into Local Disk (C:)\\FeralHeart\\Media Particles.
The particle files should already be in your folder, all you need to do is load them ingame by going to Object Maker\\Effect Maker\\Particle and type in WaterSplash or WaterfallSmoke then click the Add 'New button'.