BalinWas the water in liquid form?
this Solid? Gas?
LemonCurryWas the city located in a desert, the expectation of surface water was near zero, so the finding of any unexpected water source exceeds the expectations by several magnitudes?
no (hope this counts as one question

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I believe it doesGalFiskIs the extra water put there by: precipitation? Streams? Humans?
this, good Q Animals? Condensation? Melting?