This tutorial on the application of the open-source software OpenGeoSys
(OGS) in computational hydrology is based on a one-week training course
at the Helmholtz Centre for Environmental Research in Leipzig, Germany.
It provides general information regarding hydrological and groundwater
flow modeling and the pre-processing and step-by-step model setups of a
case study with OGS and related components such as the OGS Data
Explorer. The tutorial also illustrates the application of pre- and
post-processing tools such as ArcGIS and ParaView. This book is intended
primarily for graduate students and applied scientists who deal with
hydrological-system analysis and hydrological modeling. It is also a
valuable source of information for practicing hydrologists wishing to
further their understanding of the numerical modeling of coupled
hydrological-hydrogeological systems. This tutorial is the first in a
series that will present further OGS applications in environmental
sciences.