8 acres, 200 inches of rain a year, gallons?

[Novelty_Bobble]

@Chronos

Because the rain might not be falling straight down. In the extreme case, suppose that your property, on a two-dimensional map, encompasses only a narrow strip… but that that narrow strip is right along a sheer cliff face. If the rain is falling into that cliff face, you could get a lot more than your acreage times the rainfall depth.

OK…bit of a stretch there but I see where you are coming from.