NOAA Appalachia Topobathymetric Lidar data were collected by NV5 using Leica Chiroptera 4X and Leica Chiroptera 5 systems. The data was acquired between 20240907 and 20250805 in 99 missions. The data includes topobathymetric data in a LAS format 1.4, point data record format 6, with the following classifications in accordance with project specifications and the American Society for Photogrammetry and Remote Sensing (ASPRS) classification standards: 1 - Unclassified 1 - Withheld - Edge clip 1 - Overlap Withheld - Unrefracted green data from Chiroptera sensor 2 - Ground 7 - Withheld -Low noise 18 - Withheld - High noise 22 - Temporal exclusion 40 - Bathymetric bottom or submerged topography 41 - Water surface 42 - Synthetic- Chiroptera synthetic water surface 43 - Submerged feature 45 - Water column 46 - Submerged Aquatic Vegetation (SAV) 47 - Withheld - Green Laser Submerged Noise 48 - Submerged Temporal Exclusion - submerged features excluded due to temporal changes The channel bits are mapped as the following: 0 - Chiroptera green shallow laser 1 - Chiroptera synthetic water surface 3 - Chiroptera NIR The user byte is mapped as the following: 10 - Chiroptera green shallow 11 - Chiroptera green shallow 4X 12 - Chiroptera green shallow synthetic 30 - Chiroptera NIR The dataset also includes lidar intensity values, number of returns, return number, time, and scan angle. The horizontal datum for the the provided LAS files is NAD83 (2011), projected in UTM 17N. The vertical datum of the Ellipsoidal height LAS files is in GRS80 ellipsoid heights. This data set contains point cloud data(' in LAZ (compressed LAS) format', ''). The data may have been reprojected or otherwise modified from the original data in an automated process. Disregard projection information in this abstract and refer to the spatial reference section.