Explore: drag the 3D view to orbit, use the mouse wheel or trackpad to zoom, and choose a camera viewpoint below the scene. Click labelled hotspots to inspect equipment.
Experiment: switch pumps on/off, enable automatic control, vary rainfall and receiving-canal level, or open the sluice. The live graph and indicators update as simulated water rises or falls.
Be careful: if outlet water stands above polder water, an open sluice causes reverse flow. Automatic pump control uses simple hysteresis, not a certified flood-protection system.
Playback: 1× advances 10 simulated minutes per real second; 4× and 12× accelerate the model. Pause freezes the hydraulic state; reset restores the selected scenario.
Keyboard: Space pause/resume · R reset · Esc close help. All functions are available with mouse or touch.
Rendered locally in WebGL2 with original geometry. No login, CDN, third-party assets or network connection required.