Where to find Quagsire in HeartGold & SoulSilver

• Cliff Cave — Surf
• Cliff Edge Gate — Surf
• Johto Safari Zone — Surf, Walk
• Mt. Silver — Walk
• Mt. Silver Cave — Surf, Walk
• Route 10 — Surf, Walk
• Route 12 — Surf
• Route 13 — Surf, Walk
• Route 14 — Surf, Walk
• Route 15 — Surf, Walk
• Route 26 — Surf, Walk
• Route 27 — Surf, Walk
• Route 32 — Surf
• Route 47 — Surf, Walk
• Ruins of Alph — Surf
• Union Cave — Surf

Quagsire in every game · Johto & Kanto interactive map

By game: Pokémon HeartGold map · Pokémon SoulSilver map