Changes included in version 2.0 of the North Carolina TBDEM include 1) additional bathymetry in 
Neuse, Pamlico, and Chowan Rivers, 2) lowered inappropriately-elevated channels, and 
3) replaced an input project formerly processed with a nearest-neighbor resampling with bilinear.  
No Changes were made to South Carolina.  

The updated file names are shown below.
NC_TBDEM_version_20_explanation_README.txt
North_Carolina_CoNED_Topobathy_DEM_1m_version_20.cog_info
North_Carolina_CoNED_Topobathy_DEM_1m_version_20.tif
North_Carolina_CoNED_Topobathy_DEM_1m_version_20.tif.aux.xml
Topobathymetric_Model_of_the_Coastal_Carolinas_Spatial_Metadata_Data_Dictionary_version_20.docx
Topobathymetric_Model_of_the_Coastal_Carolinas_NC_CoNED_TBDEM_Spatial_Metadata_version_20.gdb.zip
Topobathymetric_Model_of_the_Coastal_Carolinas_NC_CoNED_TBDEM_Spatial_Metadata_version_20.gpkg.zip
Topobathymetric_Model_of_the_Coastal_Carolinas_1851_to_2020_metadata_version_20.xml

The Version 1.0 North Carolina TBDEM can be obtained on request by contacting Jeffrey Danielson, 
USGS EROS, 605-594-6148, daniels@usgs.gov.