Another is the Watershed Forestry Resource Guide, a partnership of the Center for Watershed Protection and US Forest Service - Northeastern Area State & Private Forestry. "This website is a central clearinghouse for all things related to forests and watersheds. There have been many recent efforts toward managing urban forests for watershed health that have resulted in a variety of highly useful tools and training materials. This site compiles these resources into a format that can be easily accessed and downloaded."
And course, a web-based source of information for forest landowners is Forestry for the Bay, at: http://www.forestryforthebay.org/index.cfm