治水

1. Origins, structure, and basic meaning

• Structure: 治水 (ちすい) combines managing in 治 with water in 水 to form the concept of flood-control water management.
• Basic usage: 治水 concerns managing rivers and water flow to prevent flood damage.

2. Common pitfalls and similar expressions

• Flood control, not water supply
  • A 治水施設 is a facility for that purpose, not a general water-supply facility.