Wanderlust World Wanderlust World Both cross rivers, but differ fundamentally:
| Aspect | Barrage | Dam |
|---|---|---|
| Primary Purpose | Raise upstream level for diversion (irrigation, navigation, water supply) | Store water (reservoir) for supply, hydro, flood control, recreation |
| Height | Low (few meters to ~15 m) | High (10 m to 300+ m) |
| Structure | Gated weir; piers + gates; often road/rail on top | Massive wall: gravity, arch, buttress, embankment; spillway separate |
| Flow Control | Precise gate adjustment → fine level management | Spillway releases; less granular control |
| Storage | Minimal (pondage only) | Large reservoir (seasonal/annual) |
| Environmental Impact | Barrier to migration; sediment trapping; but less inundation | Major: displacement, ecosystem loss, methane, sediment starvation downstream |
| Cost & Time | Lower, faster | Higher, longer |
| Examples | Farakka Barrage (India), Tees Barrage (UK) | Three Gorges (China), Hoover (USA), Aswan (Egypt) |
Rule of thumb: Barrage = diversion tool. Dam = storage engine.