Wertach is a small town in the Oberallgäu district, southern Bavaria, Germany, in the German Alps. It is situated on the river Wertach, southeast of Kempten. The town was the childhood home of the writer W. G. Sebald.
The Wertach is a river in Bavaria, southern Germany, left tributary of the Lech. Its total length is 151 km. The Wertach originates in the Northern Limestone Alps, in Bad Hindelang, east of Sonthofen ( Oberallgäu district). It flows north along the towns Wertach, Nesselwang, Marktoberdorf, Kaufbeuren, Schwabmünchen and Bobingen. The Wertach flows into the Lech (itself a tributary of the Danube) in Augsburg.