The Senne or Zenne is a small river that flows through Brussels, left tributary of the Dijle/Dyle.
Its source is in the village of Naast near the municipality of Soignies. It is an indirect tributary of the Scheldt, through the Dijle and the Rupel. It joins the Dijle at Zennegat, in Battel in the north of the municipality of Mechelen, only a few hundred metres before the Dijle itself joins the Rupel.
The Woluwe is one of the tributaries of the Senne.
Wikipedia https://en.wikipedia.org/wiki/Senne_(river)
Address 17 Clos des Augustines, Rebecq-Rognon 1430, Belgium
Coordinates 50°39'43.718" N 4°8'11.629" E