Dreisam

Dreisam
Freiburg im Breisgau downstream of the Schwabentor Bridge (August 2005)
Location
CountryGermany
StateBaden-Württemberg
RegionBlack Forest
DistrictsBreisgau-Hochschwarzwald and Emmendingen
Municipalities
Physical characteristics
Source confluenceRotbach and Wagensteinbach
 • locationKirchzarten, Germany
 • elevation377 m (1,237 ft)
MouthElz
 • location
Riegel am Kaiserstuhl, Germany
 • elevation
178 m (584 ft)
Length29 km (18 mi)
Basin size577 km2 (223 sq mi)
Basin features
ProgressionElzRhineNorth Sea
Tributaries 
 • leftKrumbach, Brugga
 • rightEschbach, Glotter

The Dreisam (German pronunciation: [ˈdʁaɪzaːm]; Celtic: *tragisamā, "the very fast one") is a 29 km long river (48.8 km including its source river Rotbach), and a tributary of the Elz in the German state of Baden-Württemberg. The waters of the Dreisam feed the famous Freiburg Bächle runnels.