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  • File:USGS Groundwater depletion map 2013.png
    ...gan, the HPA’s saturated volume has declined by roughly the volume of Lake Erie...''' ...ed volume has declined by approximately 500 km3—roughly the volume of Lake Erie. '''Despite widespread rapid decline of the water table, which has depleted
    (794 × 490 (238 KB)) - 18:51, 28 May 2016