Danube · km 1894.72
No depth reports available from viadonau (DoRIS).
Water depth is not draught. Platform Zero Incidents cites a safety margin of 20–40 cm based on German case law, depending on the riverbed, vessel type and good seamanship. This is not a fixed legal minimum. Under-keel clearance is the space between the vessel and the bed. Dynamic squat while underway reduces that space. Viadonau gives 20–40 cm as a guide for squat. Meeting and overtaking can increase it further; MARIN describes an overtaking manoeuvre with more than 70 cm of squat. Sources: Platform Zero Incidents, CCR, German court ruling, viadonau, MARIN
On 28/10/2026 at 17:30 the Wildungsmauer gauge read 145 cm, 13 cm higher than 24 hours earlier. Source: viadonau (DoRIS).
Gauge Wildungsmauer is on the Danube at kilometre 1894.72, on the km 1921.05–1872.7 stretch.
At RNW 155 cm, the site uses 250 cm fairway depth and a 30 cm margin: Wildungsmauer +65. This is a reference calculation, not a current sounding. In practice Wildungsmauer +80 is used here, +15 cm against the official rule.
Depth reports: viadonau (DoRIS).
Navigation may be suspended above 600 cm.
Water-level forecasts: the 2-day forecast from HD NÖ (yellow) and the 5-day forecast from viadonau (DoRIS) (red). Upstream lies Orth, downstream Hainburg.