I believe it is simular to Rocky,,,,,,,,,,, 1 to 3 feet,,,,,,,, may be less with the warm weather and snow compaction. But from what I have scene around here is it is holding but melting or dropping some,,,,,,,,, I have a group of 8 sledders booked for 2 days this weekend so far and am not worried unless it rains..... becoming a mini sled rally