The Fulde is a river of Lower Saxony, Germany.It belongs to the Weser river system. It is about 11 kilometres (6.8 mi) long and flows entirely within the territory of the borough of Walsrode (Heidekreis district. It rises in a valley between two parallel end moraines formed in the Saalian Ice Age. By far the largest source drains the Grundloses Moor ("bottomless moor"), 4 kilometres (2.5 mi) north of Fulde and emerges from the Kleiner See ("Little Lake") there.