Dirt Rag’s website has an article about riding this time of year and what can happen when wet or thawing trails are ridden. Most of the info comes from NEMBA’s website, which also provides a little more in-depth analysis.
While we may not be in quite the same situation as they are back east, this photo of the climb out of the valley on the Dogwood Trail at Greensfelder shows that we can develop the same sort of damage to our own trails. (Yes, there are bike tracks there, too.)