http://techalive.mtu.edu/meec/module04/Basics3.htm

Aquifers come in two types which are shown below: unconfined and confined. Unconfined aquifers are those into which water seeps from the ground surface ...

https://www.usgs.gov/faqs/what-difference-between-a-confined-and-unconfined-water-table-aquifer

A water-table--or unconfined--aquifer is an aquifer whose upper water surface ( water table) is at atmospheric pressure, and thus is able to rise and fall.

https://dpipwe.tas.gov.au/water/groundwater/aquifers/confined-unconfined-aquifers

Apr 11, 2017 ... Confined aquifers are overlain by impermeable rock or clay. Unconfined aquifers are closer to the surface.

https://www.usbr.gov/lc/yuma/programs/YAWMS/GROUNDWATER_aquifer.html

Sep 20, 2018 ... An unconfined aquifer, also called a water-table aquifer, is an aquifer which has the water table as its upper boundary. Unconfined aquifers ...

https://www.britannica.com/science/unconfined-aquifer

Unconfined aquifer: aquifer: Types: …the water table in an unconfined aquifer system has no overlying impervious rock layer to separate it from the atmosphere .

https://en.wikipedia.org/wiki/Aquifer

(See Biscayne Aquifer.) Typically (but not always) the shallowest aquifer at a given location is unconfined, meaning ...

https://www.youtube.com/watch?v=wx0w-Az5JOY

Mar 8, 2017 ... A brief description of the differences between unconfined aquifers and confined aquifers.

https://sciencing.com/differences-confined-aquifer-unconfined-aquifer-8749041.html

Mar 13, 2018 ... Aquifers are bodies of water located underground. They may be enclosed within surrounding rock, which is called a confined aquifer, or exist ...

http://www.kgs.ku.edu/HighPlains/atlas/aptyp.htm

Nov 21, 2000 ... Because aquifer function is defined by continuity and characteristics ... like most Kansas aquifers, is an unconsolidated, unconfined aquifer.

https://www.trenchlesspedia.com/definition/3125/unconfined-aquifer

Unconfined Aquifer Definition - An unconfined aquifer is defined as a body of water formed from ground water, rain water run off and streams with its...