The connection between streams and groundwater
A nice British video explaining the connection between rivers and groundwater. I can’t get the embed to work, so you’ll have to click through to watch: http://www.groundwateruk.org/How-Rivers-Work-Role-of-Groundwater.aspx
This is why I say I study rivers AND groundwater – if you want to understand how water moves through a watershed, you’ve got to think about both.
Thanks to Michael Campana for sharing the link.