Originally Posted by
HooKooDooKu
Looking at a Topo, it looks like you have to go a ways down Twentymile to be assured of water, travelling all the way down to Proctor Branch 1.5 miles down the trail with a 1,100' elevation drop.
During a time of low water, I had no problems getting water a mile up the trail at campsite #113. Now the pipe at the campsite was dry, but I only had to walk about 100' or 200' down the drainage before I was able to find plenty of water.
But it also looks like Twentymile crosses several drainages early on that MIGHT have water (I'm saying this strictly based on what I see on the topo... I've only hiked that section of Twentymile once before and don't recall what water was like in that area). Looks like the best bet is the 2nd drainage located about 700' down the trail with about a 125' elevation drop. The water source at #113 is going to be just as far off the trail with even more of an elevation drop.
So if you have no plans to stay at #113, it might be worth the walk to see what you can find on Twentymile.
Otherwise, if you're considering Moore Spring, it's not really worth it unless you're going to take the time to continue a little bit farther and check out Gregory Bald. But if you should decide to go to Moore Spring, follow Gregory Bald trail until it intersects with Gregory Ridge trail just past the intersection with Long Hungary Ridge. To get to the Spring, look for a little used and unnamed trail... simply marked by a sign saying "No Horses Beyond This Point". Follow that a little more than a 1/4th. mile to find the spring. To continue to Gregory Bald, don't double back all the way to the intersection. Instead, just before the spring, there is another path strait up the mountain. Follow that an you'll run into Gregory Bald Trail again in 1/10th of a mile. Once again, at the intersection, you'll see a sign about no horses. Turn left to get to Gregory Bald. On the way back to the AT, simply stay on Gregory Bald trail rather than taking the side trail to Moore Spring.