SCI CHP 15: Part 4 - Wells

Front

What is the maximum depth a drilled well can reach?

Back

1,000 feet.

Front

What are the three main types of wells?

Back

Dug, driven, and drilled.

Front

What is the most common type of well used today?

Back

Drilled well.

Front

How deep must you dig to create a functioning well?

Back

To the water table.

Front

What is a confined aquifer?

Back

An aquifer that is trapped between layers of impermeable rock or soil.

Front

What is an unconfined aquifer?

Back

An aquifer that is open to the surface and can easily receive water.

Front

What is the purpose of a well?

Back

To access groundwater.

Front

What is the water table?

Back

The upper surface of the zone of saturation where groundwater is found.

Front

What is the difference between a dug well and a drilled well?

Back

A dug well is excavated by hand or machinery, while a drilled well is created using a drill rig.

Front

What is the significance of pressure in a confined aquifer?

Back

Water in a confined aquifer is under pressure, which can cause it to rise above the aquifer when tapped.