Wooden Shoe Boater — Netherlands

• Belgium: Waterwegen en Zeekanaal / De Vlaamse Waterweg — Schelde, Maas, Albert Canal, Ghent-Terneuzen
• Germany: Wasserstraßen- und Schifffahrtsverwaltung (WSV) PEGELONLINE — Rhine, Moselle, Main, Danube, Elbe, Weser
• France: Voies Navigables de France (VNF) — Seine, Rhône, Saône, Canal du Midi, Rhine-Rhône
• Austria: Hydrographischer Dienst — Danube (Wien, Linz, Passau gauges)
• Switzerland: BAFU Hydrodaten — Rhine (Basel, Rheinfelden), Aare, Rhône

Each gauge will show current level (cm), trend (rising/falling/stable), and alert status (normal / low / high / flood warning).