This dataset is the product of a geospatial interpolation using groundwater-level data obtained from a U.S. Geological Survey (USGS) synoptic survey of 129 groundwater wells in Fauquier County from October 29 through November 2, 2018 and selected points from the National Hydrography Dataset (NHD) to represent a continuous groundwater-level altitude surface. Methodology is detailed in USGS SIR 2022-5014 "Groundwater-level contour map of Fauquier County, Virginia, October - November 2018." The raster surface has a horizontal grid spacing of 98.43 feet (30 meters). Raster values represent groundwater-level altitude in decimal feet. Horizontal coordinates are referenced to the geographic coordinate system North American Datum of 1983 (NAD 1983) and groundwater-level altitudes are referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29). The projected coordinate system is Albers Conic Equal Area with linear units of 30 meters, a central meridian of -96.0, standard parallels of 29.5 and 45.5, and a latitude of origin of 23.0.