Ice thickness is an important parameter complementing the long term mass balance time series at Jamtalferner in Austrian part of Silvretta (Eastern Alps). At the end of June 2015, ice thickness measurements were carried out. These measurements enabled the determination of ice thickness along the measurement profiles, the modeling of the subglacial topography of the Jamtalferner, and the calculation of the ice volume of the Jamtalferner. Based on this data and the glacier inventory, future scenarios of glacier area and ice thickness were developed, and a possible development of the mass balance (Chapter 8) was calculated. The scenarios indicate a complete dissolution of the glacier in the coming decades, with a drastic reduction in water supply. In April 2015, radar measurements of snow height were conducted to compare with the conventional mass balance. The point density of the radar measurement is higher, allowing for better detection of small-scale patterns, but the average value over the glacier is almost identical.