To the east the slopes of the Schwarzer Grat descend to the little stream of Rotenbach, a southwestern tributary of the Eschach, which flows to the north of the mountain. On the southwestern flank is the source of the Eisenbacher Tobel which flows roughly north and empties into the Eisenbach before also joining the Eschach. On the southern flank of the mountain rises the little Scheidach, a northeastern tributary of the Wengener Argen in the catchment area of the Untere Argen.