ABSTRACTShorelines along the Enköping esker were levelled and plotted to distance diagrams. The various indications of a shoreline did not directly show a clear stratification and could not be used for a calculation of the assumed increase of land uplift in a south-north direction. Instead, a modern isobase system based mainly on repeated precise levellings was used to refer the weighted shoreline indications to the isobase of Stockholm and Uppsala respectively. An examination of the altitudes of the shoreline indications derived in this way, drawn as histograms, shows interesting maxima, one around 30 m above mean sea-level (a.m.s.1.) and another around 50 m.a.m.s.1. reduced to the isobase of Stockholm. The possible correlation of these maxima and other minor maxima with the Litorina transgressions observed by other authors is discussed.