The best replacement for waterfalls is waterfall.

The best alternatives to waterfalls are rated as following:
★★★★★  waterfall
★★★  fountains
★★  ponds
★  rapids
  manmade waterfall

Your alternative for waterfalls is not listed? Suggest!
Speaking about waterfalls, one probably shouldn't forget about rainbows.

Other search terms related to waterfalls and their ratings are:
★★★★★ rainbows
★★★★ ponds
★★★ swimming holes
★★ caves
★ pond
★ pools
waterfalls
pool
swimming pools
You have in mind a companion for waterfalls and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of waterfalls in all years. Click on graph for more.
waterfalls
waterfall
fountains