What the Glassboro name means on a soil map
USDA established the Glassboro soil series in Gloucester County in 2003 and named it for the town. That is a description of a soil series, not a survey of Glassboro basements. An area-weighted SSURGO calculation within the borough boundary puts Urban land-Aura complex first among individual map units, at about 12.9% of the intersected area.
It is the largest unit, not a majority. We would not apply the named series' seasonal groundwater range to your yard without evidence from the property.