2020. U.S. Geological Survey, Southwest Region. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (https://doi.org/10.5066/F7WH2N65) represents a seamless, s... Montgomery County, Pennsylvania.
2001. Pennsylvania Department of Conservation and Natural Resources. Two digital data sets, one for geologic units and faults and the other for dikes, have been prepared for Pennsylvania. The data sets were digitized... State of Pennsylvania.
2006. This geology shapefile covers the entire Susquehanna River Basin (2006 boundary). It represents the merging of three state (NY, PA, MD) bedrock geo... Susquehanna River Basin Commission (SRBC).
2005. Contains various shapefiles, pdf's, and jpeg maps pertaining to the Northern Lancaster County Groundwater study. Layer include groundwater basin sh... Susquehanna River Basin Commission (SRBC).
2011. Polygon shapefile representing the area underlain by shales with the potential for natural gas extraction in the Susquehanna River Basin. This data... Susquehanna River Basin Commission SRBC.
2018. Digitized regional surficial geology map for northwestern Pennsylvania. The complete citation for the paper map is: Map of the Glacial Deposits of ... Allegheny College.
2004. USGS. 12 digit USGS hydrological unit code (HUC) watersheds within Pennsylvania. Includes percentage land-use information from the National Land Cover Da... Western Pennsylvania Conservancy.
2006. Polyline shapefile depicting water trails in the Susquehanna River Basin. The Pennsylvania Fish and Boat Commission defines water trails as recreat... Susquehanna River Basin Commission (SRBC).