The Pennsylvania State UniversityImpervious surfaces data is used for modelling the sources and amount run-off into Lake Erie. Woolpert's automated land cover feature extraction processes was used to perform impervious surface delineation. Woolpert utilized commercial off-the-shelf (COTS) remote sensing software, proprietary software and applications to perform automated feature analysis incorporating imagery, LiDAR and other ancillary . The automated processes replace the need to manually digitize features.FileengPennsylvania Spatial Data Access (PASDA)PublicLake Erie Watershed - Erie PA, Impervious Surfaces Mapping [Pennsylvania]DatasetsPennsylvania