USA tap water O-isotope map

Modeled ¹⁸O/¹⁶O ratios of tap waters across the contiguous USA. Developed on 2020-02-12 using the methods of Bowen, et al. (2007) and 1) precipitation isotope ratio maps from http://waterisotopes.org (OIPC v.3.1), and 2) CONUS tap water isotope measurements from Waterisotopes Database (2020).<br>data_sources.csv: provenance and citation information for tap water data used in the analysis<br>200212_tap.tif: 2-band GeoTiff raster. Layer 1: mean predicted tap water d¹⁸O. Layer 2: 1 standard deviation value for prediction.<br>200212_usTap_4class.png: Reclassified image showing mean predictions.<br><br>Bowen, G. J., Ehleringer, J. R., Chesson, L. A., Stange, E., and Cerling, T. E. ( 2007), Stable isotope ratios of tap water in the contiguous United States, <i>Water Resour. Res.</i>, 43, W03419, doi:10.1029/2006WR005186.<br><br>Waterisotopes Database (2020) http://waterisotopesDB.org. Accessed 2/12/2020. Query: minLat = 20, maxLat = 55, minLong = -130, maxLong = -60, Type=Tap