| Hydro Pump | Details | Level Up | TM | Move Tutor | Egg Move |
| Gen IX Dex | Gen VIII Dex | Gen VII Dex | Gen VI Dex | Gen V Dex |
| Gen IV Dex | Gen III Dex | Gen II Dex | Gen I Dex |
| Attack Name | Battle Type | Contest Type |
| Hydro Pump |  |  |
| Power Points | Base Power | Accuracy |
| 5 | 120 | 80 |
| Battle Effect: Blasts water at high power to strike the foe. |
||
| Secondary Effect: No effect. | Effect Rate: -- % |
|
| TM # | Appeal Points | Jam Points |
| None | 
| |
| Contest Effect: A highly appealing move. |
||
| BrightPowder | King's Rock | Physical Contact |
| Yes | Yes | No |
| Battle Palace Style | Battle Arena | Pokémon Hit in Battle |
| Attack | +1 | Selected target |
| Picture Example of Hydro Pump | ||
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||
Pokémon That Learn Hydro Pump By Level Up in Ruby/Sapphire/Emerald/Colosseum/XD:
| No. | Pic | Name | Type 1 | Type 2 |
| #007 |  | Squirtle |  |  |
| #008 |  | Wartortle | | |
| #009 |  | Blastoise | | |
| #054 |  | Psyduck | | |
| #055 |  | Golduck | | |
| #060 |  | Poliwag | | |
| #061 |  | Poliwhirl | | |
| #072 |  | Tentacool | |  |
| #073 |  | Tentacruel | | |
| #116 |  | Horsea | | |
| #117 |  | Seadra | | |
| #120 |  | Staryu | | |
| #130 |  | Gyarados | |  |
| #131 |  | Lapras | |  |
| #134 |  | Vaporeon | | |
| #138 |  | Omanyte |  | |
| #139 |  | Omastar | | |
| #158 |  | Totodile | | |
| #159 |  | Croconaw | | |
| #160 |  | Feraligatr | | |
| #170 |  | Chinchou | |  |
| #171 |  | Lanturn | | |
| #183 |  | Marill | | |
| #184 |  | Azumarill | | |
| #211 |  | Qwilfish | | |
| #230 |  | Kingdra | |  |
| #245 |  | Suicune | | |
| #249 |  | Lugia |  | |
| #258 |  | Mudkip | | |
| #271 |  | Lombre | |  |
| #279 |  | Pelipper | | |
| #320 |  | Wailmer | | |
| #321 |  | Wailord | | |
| #350 |  | Milotic | | |
| #367 |  | Huntail | | |
| #368 |  | Gorebyss | | |
| #369 |  | Relicanth | | |
| #382 |  | Kyogre | | |
Pokémon That Learn Hydro Pump By Level Up in Fire Red/Leaf Green:
| No. | Pic | Name | Type 1 | Type 2 |
| #007 | | Squirtle | | |
| #008 | | Wartortle | | |
| #009 | | Blastoise | | |
| #054 | | Psyduck | | |
| #055 | | Golduck | | |
| #060 | | Poliwag | | |
| #061 | | Poliwhirl | | |
| #072 | | Tentacool | | |
| #073 | | Tentacruel | | |
| #116 | | Horsea | | |
| #117 | | Seadra | | |
| #120 | | Staryu | | |
| #130 | | Gyarados | | |
| #131 | | Lapras | | |
| #134 | | Vaporeon | | |
| #138 | | Omanyte | | |
| #139 | | Omastar | | |
| #158 | | Totodile | | |
| #159 | | Croconaw | | |
| #160 | | Feraligatr | | |
| #170 | | Chinchou | | |
| #171 | | Lanturn | | |
| #183 | | Marill | | |
| #184 | | Azumarill | | |
| #211 | | Qwilfish | | |
| #230 | | Kingdra | | |
| #245 | | Suicune | | |
| #249 | | Lugia | | |
| #258 | | Mudkip | | |
| #271 | | Lombre | | |
| #279 | | Pelipper | | |
| #320 | | Wailmer | | |
| #321 | | Wailord | | |
| #350 | | Milotic | | |
| #367 | | Huntail | | |
| #368 | | Gorebyss | | |
| #369 | | Relicanth | | |
| #382 | | Kyogre | | |
Pokémon That Learn Hydro Pump By Breeding:
| No. | Pic | Name | Type 1 | Type 2 |
| #118 |  | Goldeen | | |
| #119 |  | Seaking | | |
| #158 | | Totodile | | |
| #159 | | Croconaw | | |
| #160 | | Feraligatr | | |
| #226 |  | Mantine | | |
| #283 |  | Surskit |  | |
| #284 |  | Masquerain | | |
| #318 |  | Carvanha | |  |
| #319 |  | Sharpedo | | |
| #371 |  | Bagon | | |
| #372 |  | Shelgon | | |
| #373 |  | Salamence | | |
Pokémon That Learn Hydro Pump By Purifying or A Special Way:
| No. | Pic | Name | Type 1 | Type 2 |