Home › Words › H › hydrostratigraphyhydrostratigraphyhydrostratigraphy means structure of subsurface porous materials in reference to the flow of groundwater, often relating to stratigraphy.EtymologyFrom hydro- + stratigraphy.nounStructure of subsurface porous materials in reference to the flow of groundwater, often relating to stratigraphyDefinitions & examples from Wiktionary (CC BY-SA 3.0).