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Breakline Datasets
NC_Phase2HalifaxCo_2014, NC_Phase_2

This elevation data was produced through a partnership between the USGS (3DEP) and the State of North Carolina.
Lidar data was collected in early 2014 as part of the NC Phase 2 partnership project. 

As a partnership/contributed dataset, the data orignally delivered to USGS was not necessarily edited to USGS Base Specification beforehand, 
and hence still had a variety of hydroflattening errors in the breaklines and DEMs.
Before publishing such datasets, the USGS completes necessary edits so the DEMs meet the USGS Base Specifications. 

There are 2 breaklines shapefiles provided here:

In the folder titled "Breaklines_NGTOC_Edited" are the final resolved breaklines used to produce the DEMs published on the National Map. 
 - The USGS recommends using this breakline dataset for any DEM exports or additional editing of the breaklines, 
   as all the simple hydroflattening errors have already been resolved.
 - This dataset was converted to polygon feature type. 

In the folder titled "Breaklines_Original_Contractor" are the raw contractor delivered breaklines before any modifications were made. 
 - The USGS does not guarantee the quality or efficacy of this breakline dataset, but provides the file in case users may find them useful for any purpose.
 - Use this dataset with caution, as a variety of hydroflattening errors remain in these original breaklines. 
 - This dataset was delivered as a polyline feature type.