Water moves slowly downward from gravity to ground water through what process?

Percolation

Because they are sources for fresh water, lakes are important parts of what type of systems?

A stream’s narrow trough that has been shaped by the forces of flowing water is called what?

Stream Channel

Saltwater intrusion is a source of contamination where?

Groundwater in Coastal Areas

Rock or sediment layer that contains abundant, freely flowing groundwater is known as what?

Aquifer

What formation shows the drawdown from water that has been rapidly pumped from a well?

Cone of Depression

What term is applied to the topography of any limestone are where sinkholes are numerous and small surface streams are nonexistent?

Karst Landscapes

What process applies to the excessive growth of algae and other related organisms in a lake as a result of the input of large amounts of nutrient ions leading to an artificial aging of a lake?

Eutrophication

Through dripping water, formation within caverns (such as stalactites and columns) are formed from the deposition of what?

Travertine

What term means the sinking of land resulting from the removal of ground water?

Land Subsidence

Which US River has the greatest river discharge (volume rate of flow)?

Mississippi River