I was there Saturday afternoon. Rode out of Calumet. The trails were rideable and I had no overheating issues. There were plenty of dirt spots but not terribly bad. Also some wet spots. I turned around at a good size puddle. I certainly could have gotten through just decided I was done. This was around 1pm and it was 55 degrees. Temps have remained above freezing since I left. I'm not sure how much good 4" would do.