The eponymous river flows through the Dreisam Valley, which was formed by sedimentary deposits from the inflowing streams that unite to form the Dreisam. More than 10 million m³ of groundwater are withdrawn from the whole of the valley every year, a considerable part of which provides drinking water for the city of Freiburg. The flat valley floor is therefore partly a water protection area (Шаблон:Lang). (by way of comparison, the annual groundwater outflow from the valley is less than 15 million m³.)
Transportation
The B 31 and the Höllentalbahn railway run through the Dreisam valley, each leading from Freiburg into the Black Forest.
Tourism
For many tourists, the Dreisam valley is mainly known for its hiking and mountain biking trails through the Black Forest. The proximity to Freiburg as well as to neighbouring Alsace make the area a popular destination. The Schauinsland hill and the Feldberg, the highest mountain in the Black Forest, are easily accessible from the valley.
The four municipalities of Kirchzarten, Stegen, Buchenbach and Oberried have joined forces to promote the Dreisam Valley touristically.
Landscape protection
Parts of the valley are designated as a landscape conservation area, from the eastern city limits of Freiburg to Buchenbach between the lower reaches of the Wagensteigbach stream and the lower reaches of the Rotbach brook.
