Assertion: aquifer's groundwater | /r/HasProperty | perennial surface water
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Source sentences:
text: The recent FAO/SWALIM study (2012) considered that in the northern provinces of Somaliland and Puntland, where there is no perennial surface water, "total annually rechargeable groundwater (although not necessarily available for abstraction) in the major aquifer systems is theoretically equal to some 4.3 x 109 m³.