· Water Underground Lesson 3
The water table can be found at the top of the saturated zone.
· Clay and Solid rock are impermeable.
· The best way to get water from an aquifer with a well is to drill below the water table.
· If you know the depth of the water table, you will know how deep to dig to reach groundwater.
· Permeable layers have large connected pores such as sand and gravel.
· Impermeable layers have small pores that are unconnected.
· The unsaturated zone is the area ABOVE the water table
· Artesian wells are wells that use natural pressure inside the well caused by the layers of impermeable rock that squeeze together around the groundwater.
· What happens if the water table rises above the unsaturated zone