An Open Repository of U.S. Cone Penetration Test (CPT) data

Cone Penetration Test (CPT) data collected by the U.S. Geological Survey since 1978 are compiled and provided as a uniformly formatted set of comma separated value (.csv) files. This dataset includes 1822 CPT soundings from 14 U.S. States. Provided CPT data are a set of three column comma separated value (.csv) files containing depth (meters), tip resistance (̨MPa), and sleeve resistance (kPa) measurements. All data are presented with no post processing or filtering applied. A separate index file contains the site names, positions, elevation, water table depth (if measured), and associated metadata for all included CPT soundings. We also provide a zipped directory of legacy .txt formatted CPT data for users wishing to reference the original data collected by the USGS.