Dual Isotopes of Nitrate in Suburban Philadelphia Stormwater Basins

These are the datasets used in the paper by Kirker, A N, and L Toran. 2022. δ15N and δ18O isotopic ratios of dissolved nitrate in stormwater runoff were measured at two sites: Ethel Jordan Park (EJ.csv) and Upper Moreland Township School District (UMTSD.csv). At each site, time-based ISCO samples were collected during three storm events. The sample collection time, nitrate concentration, and isotopic composition are given for each sample.Additionally, results of a Bayesian mixing model (MixSIAR) are presented, showing estimated percent contribution to each sample from atmospheric and soil N sources. End-members used for the mixing model are in EndMembers.csv. Rainfall data downloaded for Weather Underground personal weather station sites KPAJENKI4 and KPAWILLO10, and water level data recorded by Onset HOBO pressure loggers are included for each storm event.