Pegelstände

Pegelstände, often translated as water levels or gauge heights, refer to the measured height of a body of water relative to a fixed reference point, known as a zero point or datum. These measurements are crucial for a variety of applications, including navigation, flood forecasting, water management, and scientific research. Typically, pegelstände are recorded by water level gauges, which can be simple staff gauges marked on a structure or sophisticated electronic sensors.

The zero point for pegelstände is usually established by a national or regional surveying authority and is a fixed elevation that does not change. The measured water level is then expressed as a value above or below this zero point. For instance, a pegelstand of 2.5 meters means the water surface is 2.5 meters above the established zero point. Conversely, a negative pegelstand would indicate the water level is below the zero point.

Changes in pegelstände are influenced by numerous factors, such as precipitation, snowmelt, evaporation, tides, river flow, and man-made interventions like dam operations or water intake. Monitoring pegelstände allows authorities to assess hydrological conditions, predict potential flooding or low water events, and manage water resources effectively. Data from pegelstände is often made publicly available through online portals and historical archives.