To obtain HM05 Waterfall, you must defeat the 8th Gym Leader Wallace in Sootopolis City. When you first arrive in Sootopolis City, the Gym is still inaccessible. So you’ll still need to finish the main story taking place in the Cave of Origin, which is located inside Sootopolis City.
Wallace himself will give you HM05 Waterfall upon defeat, so unlike the other Gym Leaders, you’ll be able to use HM05 Waterfall outside of combat immediately.
You’ll need this HM to access Ever Grande City on your way to challenge the Elite Four.
HM05 Waterfall Location
To be able to challenge Wallace for the Rain Badge and HM05, make sure you’ve done both of the following:
- Obtained all other 7 Gym Badges
- Finished the story taking place at the Cave of Origin, located in Sootopolis City
Sootopolis is a unique city where it’s entirely built around a giant crater, so its only entry point is through an underwater cave on the crater’s south side.
If you haven’t been to Sootopolis City, here’s how to get to the city and the Gym:
Step 1: Fly to Route 126
Step 2: Surf south following the diving spot’s trail
Step 3: Turn left around the crater
Step 4: Dive anywhere around the crater’s south side (marked with an “X” above)
Step 5: Once you dive, enter the underwater cave
Step 6: Inside this underwater cave, you’ll want to return to the surface and then head north to find the gym
Using HM05 Waterfall Outside of Combat
Once you have the HM, teach a Pokémon Waterfall – because you’ll need it to get to Ever Grande City, your next destination.
Ever Grande City is home to Victory Road, your final test before facing Hoenn’s Elite Four.
Waterfall is also a great physical water-type move in battle. If you have a Swampert as your starter, consider having it learn HM05 since it compliments his typing and high base attack.
You also have the option to revisit Meteor Falls and explore deeper into the cave using your newly acquired HM. Here are all the items you can get if you fully explore the newly unlocked areas in Meteor Falls:
- TM02 Dragon Claw
- Full Restore
- PP Max
- Star Piece
- Super Repel
- How To Get HM05 Waterfall in Pokémon ORAS