Google maps, Tioga County, PA-Gas exploration:
Natural Gas Wells Mapper-natural gas lease forum for landowners:
This Google map shows all the enforcement actions in the US taken by the EPA for water, air and land: Note, this map appears to have a lot of errors in it, especially in the Tioga County, PA region. Some of the places they have labeled as being in Tioga County are actually in Warren or Bradford County. Great job EPA!
Graphs for well sites drilled in PA between 2003-2009:
PA DEP offers a variety of maps at this site:
Well drilling permit map for Bradford, Susquehanna and Tioga, PA counties:
Data from PA DEP Permit and Rig Reports for 4 counties of ANF: Elk, Warren, McKean, and Forest:
Map of Road conditions in Tioga County, PA and surrounding areas.