|Location||Goslar, Lower Saxony, Germany|
|Main source||near Hahnenklee in the Upper Harz
|River mouth||near Langelsheim into the Innerste
|Progression||Innerste → Leine → Aller → Weser → North Sea|
|Basin size||27 km² (22 km² to the reservoir)|
It rises in the vicinity of Hahnenklee in the Upper Harz and discharges about 12 km later into the Innerste near Langelsheim . At Herzog Juliushütte, in the municipality of Astfeld near Goslar, it is controlled by the Grane Dam.
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