Grenff
The Grenff , also Grenf , is an approximately 21 . 9 km long , right-hand or southeasterly tributary of Schwalm in East Hesse Highlands in North Hesse Schwalm-Eder-Kreis and belongs to the river system and catchment area of the Weser . 
<triplet> Grenff <subj> 21.9 <obj> length <subj> Schwalm <obj> mouth of the watercourse <triplet> Schwalm <subj> Grenff <obj> tributary