Resources/Links:

Federal Regulatory Agencies:

US Army Corps of Engineers
http://www.usace.army.mil

US Fish and Wildlife Service
http://www.fws.gov

Pennsylvania State Regulatory Agencies:

PA Dept. of Environmental Protection
http://www.depweb.state.pa.us/dep/site/default.asp

PA Dept. of Conservation and Natural Resources
http://www.dcnr.state.pa.us

PA National Heritage Program
http://www.naturalheritage.state.pa.us

PA Fish & Boat Commission
http://www.fish.state.pa.us

PA County Conservation District Directory
http://www.pacd.org/districts/directory.htm

Pennsylvania Organization for Watersheds and Rivers
http://www.pawatersheds.org

Other:

Wildlands Conservancy
http://www.wildlandspa.org

The Nature Conservancy
http://www.nature.org