How Rivers Work - The Role of Groundwater. Отличное общеобразовательное видео, в котором, что называется, на пальцах показана роль подземных вод в круговороте воды.

This video, produced by the UK Groundwater Forum, helps explain the important role that groundwater plays in the environment. The video shows the contribution groundwater makes to the flow in Britain’s rivers and in doing so provides some basic information on groundwater, subsurface dynamics and the hydrological cycle as a whole.