The Wutach drains almost the entire south-eastern slopes of the Black Forest. There, its waters first flow through glacially formed valley troughs, carved into the crystalline rocks of High Black Forest. Here are the lakes of the Feldsee and Titisee (Gutach), Windgfällweiher (Haslach), Schluchsee (Schwarza) and Schlüchtsee (Schlücht). After flowing through several very narrow ravines, the streams reach the edge of the Black Forest and the sandstone, limestone and mudstone series of the South German Scarplands. The lower course of the Wutach, which bends to head southwest, runs past the foot of the dominant White Jurassic step of the Swabian Jura and of Randen, at right angles to the dip slope and thus collects several Black forest rivers. The Kotbach, flowing from the other side to the east and parallel to the High Rhine, follows an ice age Rhine channel (the Klettgaurinne). The Wutach only drains parts of the Black Forest and thus resembles the Enz in this respect.