Drought, for sure.
Also, many of the water places around are interconnected and water from A can be moved to B and C where someone determines a greater need.
I have no clue about the details of that, but in my 6 years, I've seen many "lakes" or "ponds" go from full one week to empty the next - or vice versa!
It's one of those puzzles meant to send us all 'round the bend!
SWR