I drove by Walden a few weeks ago and it was wide open. It hasn't been any colder since then, so I imagine you'll be fine there. I've noticed that lake takes awhile to freeze over, probably because it gets pretty deep, so I doubt it even froze over this year. There will a few solid inches on lakes in the area, and it will still be open.
Posted Thu Mar 08, 2012 5:42 pm