Lisa A Senior

Lisa Senior is a hydrologist with the USGS Pennsylvania Water Science Center and has been involved with both groundwater and surface-water investigations since 1986, becoming Project Chief for numerous studies in Pennsylvania since 1988.  


Recent studies have included baseline surveys of groundwater quality in and near areas of Marcellus Shale gas development, evaluations of naturally-occurring radionuclides, trace elements, and methane in groundwater, effects of land use on groundwater and surface-water quality, modeling of surface-water quality, and characterization of fractured-rock hydrogeology of the Newark Basin to support contaminant delineation, monitoring, and remedial management in southeastern Pennsylvania. 


  • M.S. in Hydrology, University of Arizona, Tucson
  • B.A. in Geology, Middlebury College, Middlebury, Vermont

USGS Experience

  • Pennsylvania Water Science Center: 1986 - present
  • Branch of Regional Geophysics, Menlo Park, California: 1981 - 1983