What type of well draws water from an unconfined aquifer by gravity?

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The key idea is water delivery by gravity without pumping. In an unconfined aquifer, the water table forms the upper boundary and water isn’t under pressure from surrounding rocks. A gravity-driven well taps that aquifer and relies on the natural hydrostatic head to bring water to the surface, so water can flow out simply because of gravity. Artesian wells involve water under pressure in a confined aquifer, which isn’t the scenario here. Construction types like dug or bored describe how the well is made, but the term that specifically denotes gravity flow from the aquifer is gravity well.