The discharge at the sampling site is highly variable. Discharge
averages at gauge Magdeburg (river-km 326.6) range between
233 m3/s (MNQ: mean low water discharge), 558 m3/s (MQ: mean
discharge) and 1870 m3/s (MHQ: mean high water discharge). The
lowest value was measured in 1934 (NQ: 233 m3/s), the highest in
2013 (HQ: 5010 m3/s) (BfG, Information System Undine, 2015).