| Type | water |
| Category | Special |
| Power | 150 |
| Accuracy | 90 |
| PP | 5 |
| Introduced | Generation 3 |
User must recharge next turn.
When a Pokémon is holding Waterium Z and uses its Z-Power, Hydro Cannon turns into Hydro Vortex and has base power 200.
| Ruby Sapphire Emerald | Powerful, but leaves the user immobile the next turn. |
| FireRed LeafGreen | The foe is hit with a watery cannon. The user can’t move on the next turn. |
| Diamond Pearl Platinum HeartGold SoulSilver | The foe is hit with a watery blast. The user must rest on the next turn, however. |
| Black White Black 2 White 2 | The target is hit with a watery blast. The user must rest on the next turn, however. |
| X Y O.Ruby A.Sapphire | The target is hit with a watery blast. The user can’t move on the next turn. |
| Sun Moon Ultra Sun Ultra Moon | The target is hit with a watery blast. The user can’t move on the next turn. |
| Sword Shield B.Diamond S.Pearl | The target is hit with a watery blast. The user can’t move on the next turn. |
| English | Hydro Cannon |
|---|---|
| Spanish | Hidrocañón |
| Italian | Idrocannone |
| Japanese | ハイドロカノン (Hydro Cannon) |
| German | Aquahaubitze |
| French | Hydroblast |