Ice sheet meltwater and sediment discharge is measured at only very few sites in Greenland. The measurements provide detailed insights into ice sheet surface melting, englacial meltwater routing, subglacial erosion, etc., and their importance increase with the lengthening of the time series. Monitoring was initiated by IGN (Copenhagen University) in 2006, and taken over by the Geological Survey of Denmark and Greenland in 2014. Data are available through the Programme for Monitoring of the Greenland Ice Sheet (www.PROMICE.dk).