The Eem (formerly the Amer) is a river in the central Netherlands with a length of approximately 18 kilometres (11 mi).The river is fed by the Vallei Canal and a number of Veluwe creeks, the most important of which are the Heiligenberger Beek, the Barneveldse Beek and the Lunterse Beek, all of which come together in Amersfoort. The river then runs through the Eem Valley to the east of Soest, Baarn and Eemnes before emptying into the Eemmeer.