What type of well experiences rising water due to pressure within a confined aquifer?

• A. Artesian Well
• B. Natural Spring
• C. Pumping Well
• D. Dug Well

Answer: (A)

Rising water due to pressure within a confined aquifer is characteristic of an artesian well. In a confined aquifer, groundwater is trapped between impermeable layers, creating a hydraulic pressure that is higher than the surrounding land surface. When a well taps into this pressurized water, the internal pressure pushes the water up the well bore. If the pressure is strong enough, the water can rise above the surface, sometimes flowing out without any pumping. This differs from a natural spring, where groundwater simply reaches the surface due to local conditions rather than being forced upward by pressure in a confined aquifer. Pumps and dug wells involve other mechanisms or shallower aquifers, so they don’t explain the water rising solely from confined-aquifer pressure.