Pset_GeoObsHydroGeologyWaterInflow Properties for hydrogeological water inflow observations. IfcGeoScienceObservation/LOCALINFORMATION IfcGeoScienceObservation/LOCALINFORMATION SourceType Natural or artificial structure at the origin of the water inflow, like fracture, bedding, borehole, drainage pipe, drainage channel etc. SourceArea Description of the area at the origin of the water inflow. InflowRate Measured or expected water inflow rate during observation. InflowSum Groundwater inflow measured or expected during one hour.