The purpose of this USGS data release is to publish NC SELDM streamflow statistics and summary statistics of physical and chemical data in support of the information provided in the above-referenced report. This data release consists of two data sets, "NC SELDM streamflow statistics..." and "NC SELDM summary statistics for physical and chemical data...". The tables that are uploaded for the "NC SELDM streamflow statistics for 266 streamgages across North Carolina" sub-section are primarily the support files for the StreamStatsDB update that was completed when the report was approved. These files were generated using the GNWISQ and QSTATS computer programs developed and described by Granato (2009, appendices 1 and 4). This is discussed near the end of the "Prestorm streamflow statistics" section in the above-referenced report. A large table of selected site attributes and StreamStats basin characteristics that were compiled for the 266 streamgages is also provided as a part of this data release. A ReadMe file is also included in the sub-section of the data release. The tables that are uploaded for the "NC SELDM summary statistics for physical and chemical data at NC highway-runoff and bridge-deck sites" sub-section of the data release support the statewide medians table (Table 7) discussed within the "Simulating highway-runoff quality" section in the above-referenced report. This is a .csv file for each of the 11 constituents referenced in Table 11. Descriptions of the data fields (or columns) in the .csv tables are provided at the top of each .csv file. A ReadMe file is also included in the sub-section of the data release.