It's a bit weird and maybe more complicated.

I checked the area around Munich, Germany (where I live).

- one is an actual lake (correct shape) that went down to 0 from a bogus 1

- three are actual forests/parks which may have had some sorts, but 11/16/48 to 0 is a rounding error, but there is no filter for absolute, it technically is -100%...

- bit further out is another lake with 14 to 0