The objective of this master thesis is to identify the effect of glacial retreat on the Obersulzbach runoff pattern in Salzburg, Austria. As a consequence of ongoing climate change, the glaciers within the Obersulzbach valley have been generally receding since approximately 1850. It is hypothesised that this leads to modified patterns and quantities of runoff observations. Two hydrographic gauges along the Obersulzbach provide time series from 1977 until 2013 and 1989 until 2012, respectively. The discharge data is filtered to focus on discharge from glacier melt, excluding base flow and surface runoff from precipitation and snowmelt. This is achieved by calculating the mean daily discharge variation over predominantly dry periods as an indicator for the proportion of glacial meltwater. These dry periods are selected at times of typical glacial meltwater maxima during the summer months. The trends of mean daily discharge variation over these dry periods are analysed with multiple regression and partial correlation using the software “R”. Both methods either take temperature into account directly or control for it in order to remove its effects, as temperature has a significant impact on discharge variations. Both types of analyses yield similar results indicating an initial increase of the mean daily discharge variation until a critical turning point is reached, which seems to be during the 1990s. After that a decrease of discharge variation indicates a lower amount of glacial meltwater as the remaining glaciers no longer sustain such a high discharge. There are various potential explanations for this pattern, such as an initial increase followed by a reduction in total ablation area of glaciers as well as various feedback mechanisms, including changes in albedo, preferential meltwater pathways inside the glaciers and reflected and emitted radiation from surrounding slopes, as well as longer glacier edges and the change of elevation of the glacier tongue.