Danube · km 2015.21
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 Kienstock gauge read 169 cm, 9 cm higher than 24 hours earlier. Source: viadonau (DoRIS).
Gauge Kienstock is on the Danube at kilometre 2015.21, on the km 2037.86–1979.83 stretch.
At RNW 161 cm, the site uses 250 cm fairway depth and a 30 cm margin: Kienstock +59. This is a reference calculation, not a current sounding. In practice Kienstock +80 is used here, +21 cm against the official rule.
Depth reports: viadonau (DoRIS).
Marke I (HSW): 601 cm. Navigation may be suspended above Marke II (691 cm).
Water-level forecasts: the 2-day forecast from HD NÖ (yellow) and the 5-day forecast from viadonau (DoRIS) (red). Upstream lies Melk, downstream Dürnstein.