Zamzam Studies and Research Centrefrom Saudi Geological Survey
Zam zam well facts
Zamzam well is 30 meters deep. Depth to water is 3.23 meters. There are some springs contributing to the well at approximately 13 meters below surface.
A pumping test at 8000 liters/second for more than a 24 hour period showed a drop in water level from 3.23 meters below surface to 12.72 meters and then to 13.39 meters, after which the water level stopped to recede. Water level recovered to 3.9 meters below surface just 11 minutes after pumping had stopped. The aquifer feeding the well seems to recharge from rock fractures in neighboring mountains around Mecca.
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