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No the waterfall is free standing. So it will be inside of my house standing upright. Just like a wall waterfall, but standing on the floor.
I think you either have to cover them or bury them somehow if you are trying to get from a water line to the feature's location. Digging a trench isn't too big a deal if you have the right shovel but you do have to watch for gas lines etc and then how you are going to replant/regrass the dig after.