Groundwater contains 100 times the amount of freshwater in our lakes and streams combined. It sometimes consists of underground rivers (aquifers), but more often is associated with the slow flow of water through tiny pore spaces within rocks.
Different types of rocks have different porosities and this influences the water flow rate.
This recent video from the NNSS explains what they're doing to address groundwater contamination from the nuclear weapons testing.
This comment has been removed by a blog administrator.
ReplyDelete