Like Pavan, I generally don't hunt in heavy rain, but I will sometimes sit out a light shower. Not because it adversely affects the hunting, but because, like a cat, I just don't like getting wet. Water accumulation on my property has never been a problem as far as deer movement, feeding patterns, etc. are concerned. The one creek may get a little higher, but flooding has never occurred. Being retired allows me great flexibility in scheduling when I want to avoid hunting in the rain.