I have seen several waterfall-powered homes in BC. Nice that you have ample water and elevations where you can take advantage of that. When I bought the volcano ranch here, it was with an eye to being as independent as possible, but I still liked the ‘convenience’ utilities of the subdivision here. My sub has a private well in the Mauna Loa aquifer that feeds some 800 homes here with water, so I do not have to deal with catchment water issues, But if my water feed fails, I can start filling barrels at the downspouts. My area was severely affected by falling trees in the 2014 hurricane that isolated this area for weeks with no power. I have a leased solar PV system w/battery that provides most of my electric power at a rate cheaper than the electric company, and I have a backup generator if needed. My hot water is also solar, with a separate PV panel to power the pumps and controller so it is totally off-grid.
Amazingly, we have a CATV line out here that provides TV and internet connection. But I can live without that if needed. I’ve got ham radios for comms.