Where to find Quagsire in Brilliant Diamond & Shining Pearl

Walk: Great Marsh (45%, Before the National Dex), Grand Underground
Surf: Sinnoh Route 212 (10%), Great Marsh (5%)

• Grand Underground — Walk
• Great Marsh — Surf, Walk
• Route 212 — Surf

Quagsire in every game · Pokémon Brilliant Diamond & Shining Pearl interactive map (Sinnoh)