Ipo, Yeoju and Gangcheon weirs altered water levels, access and scenery while creating facilities that require maintenance.
Read the structure first
A quick ride shows the shapes of three weirs but not how they operate. Comparing gate positions, upstream and downstream water, signs and current notices reveals decisions about inspection and control; operational timing explains infrastructure better than monumental appearance.
Separate evidence and reconstruction
The three weirs share a river but differ in terrain, connections and use. Gates, monitoring, inspection, sediment work and closures reveal them as operated infrastructure rather than static sculptures. Their water-management benefits, ecological costs and recreational spaces must be considered together instead of reduced to praise or condemnation.
A note for visitors
Follow discharge and flood closures and slow down where cyclists and walkers mix.