Kaub gauging station

It is a "decisive" water level measurement site for the Rhine, as Kaub is located at the shallowest part of the Middle Rhine and ships with freight from North Sea ports have to pass Kaub on their way to the industrial southwest of Germany.

[3] The river becomes nearly impassable for freight at a gauge level of 35 cm (there is no hard lower limit).

When the gauge was modernised in 2011, paper recording was dropped and a second, redundant, measuring device was installed instead.

The measured values are transmitted to the hydrological data center and can be checked at the ELWIS [de] site.

The amount of cargo to be carried on the Rhine is limited by the draft of the ship being low enough to pass at Kaub.