The Wutach is a river, 91 kilometres long, in the southeastern part of the Black Forest in the German state of Baden-Württemberg.

Heading east-northeast, the stream then follows the glacially formed Bärental valley through the municipality of Feldberg to Lake Titisee.

[2] Below the little waterfall the Seebach enters a flat valley basin which has filled the silted-up, upper part of the Titisee since the last ice age.

Between the second and the last part of the gorge, near the village of Achdorf in the municipality of Blumberg, it takes a sharp turn (known as the Wutachknie or Knee of the Wutach), and subsequently flows SW to join the Rhine near Tiengen in the town of Waldshut-Tiengen.

Before Lauchringen the Wutach turns again in the same direction as a tributary, this time the Klingengrabens/Kotbach which arrives in a broad valley from the Klettgau region.

There, its waters first flow through glacially formed valley troughs, carved into the crystalline rocks of High Black Forest.

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.

A well-known historical lithograph shows the valley floor at the Stühlinger Zwirnerei completely covered by water.

The lower Wutach flows along the line of the valley once occupied by the much more powerful upper Ancient Danube (Urdonau), but in the opposite direction.

Because of the relatively steep gradient in its new direction of flow towards the Rhine, the river carved out the deep, roughly 30-kilometre-long, Wutach Gorge into the plateau, a process that continues today.

Similar river bends in the course of the tributaries from the Black Forest also show (much earlier) re-direction, most strikingly the Schwarza leaving the Schluchsee transversely to the direction of the valley.

Until the end of the Riss Ice Age, some 200,000 years ago, the Ancient Rhine flowed westward through the Klettgau here, instead of the little Klingengraben and Kotbach.

One of the oldest nature reserves in the country has been the Wutach Gorge, one of the last wild river landscapes of Central Europe, which have major historical, geological and ecological significance.

Nearly every rock occurring in Southern Germany is represented in the gorge, which is one of the most species-rich and intensively studied natural areas in Central Europe.

On the northern side they say Kind ("child") and Kuchi (= Küche or "kitchen"), whilst in the south they say Chind and Chuchi, which is closer to the dialect of neighbouring Switzerland.

The major industrial enterprises in the Wutacht valley are Sto AG (building materials and systems) in Stühlingen and Lauffenmühle (textile manufacturing) in Lauchringen.

The hydropower of the Wutach and its tributaries is used by the Schluchseewerk and by the Wasser- und Elektrizitätswerk Hallau in Wunderklingen to generate energy.

Note: Several digital maps erroneously show the course of the Wutach following the former route of the Feldbergdonau, probably as a result of misinterpretation the drainage ditch which links the Schleifebach (Wutach-Nebenbach) and the Aitrach (Danube tributary) and thus forms a pseudo-bifurcation.