Dragon's Den — Pokémon HeartGold & SoulSilver
Every wild Pokémon here, by encounter method.
Dragon's Den lists 3 Pokémon across 5 encounter methods (surf, old rod, good rod, super rod, and more), between level 5 and 40.
Dragon's Den in other guides
The same area in other ROM hacks on this site. Each one has its own encounter table.
Infinite FusionPokémon GS ChroniclesPokémon Heart & SoulPokémon SoothingSilverSacred Gold & Storm Silver
The original game's table for this area: