[1] She moved to the Leibniz University of Hannover for graduate studies, where she earned a diploma in Landscape Ecology and Physical Geography.
Her master's dissertation involved investigating runoff generation and groundwater recharge at Ripple Creek Pass.
[citation needed] Tetzlaff moved to the University of Freiburg as a doctoral researcher, undertaking a hydrological assessment of flow dynamics in urban rivers.
[1] During her postdoc she became interested in aquatic ecohydrology, studying hydrological influences on the ecology of Atlantic salmon.
[1] Tetzlaff's research involves ecohydrology,[3] the connection between rivers and landscapes, and stable isotope hydrology.