Researchers at the University of Bonn have developed a method that allows the water level of rivers to be monitored around the clock. The cost-effective sensor is for instance suitable for area-wide flood warning systems. The study has been published in the journal Water Resources Research.
There is a wide range of methods to determine the level of a watercourse – from very simple ones (by yardstick or staff gauge) to advanced radar solutions. But they all have a catch: Most measuring devices can be damaged due to direct exposure to the high water level, many do not allow continuous monitoring, remote reading is difficult or they are simply too expensive.
You can read the full research here.