Illuminated waterfall habitat
Main game habitat #146
To make illuminated waterfall in Pokopia, place 3 Stepping stones, 2 Torch, 3 Water, and 1 Waterfall together. It attracts Gyarados.
Use the torches to light a path to the waterfall. Pokémon might stop by to check it out.
Items to place
Stepping stonesx3
Torchx2
Waterx3
Waterfallx1

Pokémon it attracts
PokémonRarityTimeWeatherRegions
A Pokémon only appears once its region, time and weather line up. Find any of them by condition in the spawn finder.