AoE3 DatabaseAoE3: DE 100.19.18309 · read from the game files · unofficial

Technology

River Raids

River Raids (tech ID DEWarCanoeDamage) is a technology in AoE3: Definitive Edition 100.19.18309 costing 350 wood, 350 coin, 60 s to research at the Dock and Port. Effect: War Canoe: damage +25%; Tlaloc Canoe: damage +25%; Chincha Raft: damage +25%.

Quick answers (3)
How much does River Raids cost in AoE3?
350 wood, 350 coin, 60 seconds (AoE3: Definitive Edition 100.19.18309).
What does River Raids do in AoE3?
War Canoe: damage +25%; Tlaloc Canoe: damage +25%; Chincha Raft: damage +25%. The game says: "Improves the damage of War Canoes, Tlaloc Canoes, and Chincha Rafts."
What is the tech ID of River Raids?
DEWarCanoeDamage.

Improves the damage of War Canoes, Tlaloc Canoes, and Chincha Rafts.

What it does

Cost
Coin350Wood350
Research time
60 s
Game ID
DEWarCanoeDamage

Researched at

Civilizations

IncaAztecsHaudenosauneeLakota

Source: techtreey.xml and the Home City files, AoE3: DE 100.19.18309 (build 25040513).