Friday, November 1, 2019 – A new study estimates the value of the NGS Gravity Program to be between $4.2 and $13.3 billion over ten years, with a middle scenario of $8.7 billion. The socio-economic study was conducted for NGS by ARCBridge Consulting of Herndon, Virginia. The NGS Gravity Program uses information about the gravity field to provide more accurate elevation data (or “heights”) for the United States. The improved heights will result from a new vertical height reference system created from the Gravity Program’s GRAV-D Project (Gravity for the Redefinition of the American Vertical Datum), which lets surveyors and scientists employ GPS to determine more precise and accurate elevations than currently possible, in less time and with less effort.