 Elevations are modest but not flat, ranging between 14 and 20m Ordnance Datum as much of the area lies on thin alluvium overlying gravel beds laid over millennia by the River Thames which adjoins the traditional parish to the east.This range of elevations is greater than central Chertsey but smaller than Egham (in particular to its two upper neighbourhoods or localities of Stroude and Egham Hill).A public road in the south of Thorpe has a wooded backdrop being at the foot of St Ann's Hill marking a north-western boundary of Chertsey.