What are underground rivers called, aquifers or springs?

Brainyblonde

Springs A small stream of water flowing naturally from the earth. Aquifers An underground bed or layer of earth, gravel, or porous stone that yields water. http://dictionary.reference.com Oct 14 04, 7:02 PM

Baloo55th

Basically an underground river is an underground river. Springs are on the surface, as Brainyblonde points out, but are often just a little trickle not the mini fountains I expected to find when I was small! Aquifers tend to be very slow moving. For a bit more info, look at http://www.pca.state.mn.us/publications/mnenvironment/summer2002/river.html Here in sandy Southport, we have something called The Ream which flows from the moss lands to the east of us to the beach. It can cause interesting things to happen, such as when a friend of mine sank a well and lined it with 45 gallon drums. When we took it up again five years later, the lower drums had moved seawards by a couple of feet. Oct 15 04, 4:27 AM