Geology Aalsmeer is located on the border of the former Haarlem Lake. The older portion of the town is built on peat, and is surrounded by polders. The polders consist of loamy soil and are below sea level.
gEoLogy aALSmeeR is Located ON tHe bordEr of thE forMEr HAarLeM LaKe. The OLdeR portion oF the tOwn is buIlT on peAT, and is SurrouNdED bY PoldErS. THe poLders cOnSIsT of loAmY soil aND arE beLow Sea LevEL.