Generally in spring run off conditions in the whites, there are all sort of drainages that are ephemeral, not necessarily marked on maps and only appear during spring run off/flooding conditions. The other sad fact is many of the trails become drainages due to general poor design and lack of waterbars. Hiking up a trail that is effectively a streambed gets the hikers feet wet and also compounds the damage to the trail as most folks will tend to skirt the water and chew up the sides. Yes there are some popular spring time trails that have been hardened with bridges to make them safe but the vast majority are not. Far better to either stick to known spring favorites like South Moat, Kearsage North and Welch Dickey for a couple of weeks or head out off trail to minimize the damage.