Knowledge of baseflow contribution to streamflow is important for understanding watershed scale hydrology, including groundwater-surface water interactions, impact of geology and landforms on baseflow, estimation of groundwater recharge rates, etc. Baseflow (or hydrograph) separation methods can be used as supporting tools in many areas of environmental research, such as the assessment of the impact of agricultural practices, urbanization, climate change etc. on surface water and groundwater.

SepHydro offers several customizable filtering algorithms for assessing surface runoff and groundwater contributions to streamflow, as well as various data analysis and visualization options. The web-based tool has been designed with a user-friendly interface and provides flexibility in the format of user-data input and output files through a streamlined process.

The SepHydro tool has been developed through a collaborative research effort between Canadian Rivers Institute (CRI), University of New Brunswick (UNB), Agriculture and Agri-Food Canada (AAFC) and Environment and Climate Change Canada (ECCC).