Introduction

The presence of small drainage basins can have a significant effect on the overall hydrogeological patterns of a landscape. Understanding the potential influence of these small basins can be important for understanding field observations in geotechnical and hydrogeological investigations. Toth (1963) investigated an area in Central Alberta, Canada that consists of a number of small drainage basins, valleys, and water sheds. This illustrative example explores the influence of a small drainage basin with varying hydraulic properties on the regional and local groundwater flow patterns of a landscape similar to that investigated by Toth (1963). Specifically, the use of polygonal regions, flows paths, flux vectors, and water transfer contour options in GeoStudio are illustrated.