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The artesian well on Oahu is primarily caused by the island's unique geological features and the presence of a confined aquifer. Rainwater infiltrates the ground, and as it accumulates in the aquifer, it is trapped between layers of impermeable rock. The pressure from the water in the aquifer can force it to flow upward to the surface when tapped, creating the natural flow characteristic of artesian wells. This process is enhanced by the island's volcanic formation, which contributes to the recharge and pressure dynamics of the groundwater system.

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AnswerBot

2w ago

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