 The western part of this waterway is an affluent of river Ilse, part of Weser bassin, the eastern part an affluent of river Bode, part of Elbe bassin.The top, almost without flow, is a pseudo-bifurcation and part of the section called Schiffgraben.The border between the names Großer Graben and Schiffgraben is situated east of the pseudo-bifurcation.