Grejs River

Grejs River Omløbsåen ("Bypass River"), Mølleåen ("Mill River")
Mølleåen branch of Grejs River passing under Vejle's pedestrian mall
Native name	Grejs Å (Danish)
Location
Country	Denmark
Region	Region of Southern Denmark
Municipality	Vejle Municipality
Physical characteristics
Source
• location	Fårup Lake
• coordinates	55°44′13″N 9°25′00″E / 55.73703°N 9.41675°E / 55.73703; 9.41675
Mouth
• location	Vejle River
• coordinates	55°42′20″N 9°32′04″E / 55.70549°N 9.53439°E / 55.70549; 9.53439
Length	22 km (14 mi)
Basin features
River system	Vejle River
Landmarks	Grejsdalen ("Grejs Valley")

Grejs River (Danish: Grejs Å) is an approximately 22-kilometre-long (14 mi) river in Vejle Municipality in Denmark. Its source is Fårup Lake, south of the village of Jelling. It starts by heading east through a tunnel valley, then turns south to run through Grejs Valley (Danish: Grejsdalen), the largest gorge in Denmark, until it reaches the city of Vejle.^[1] North of Vejle, it splits into two branches, Omløbsåen ("Bypass River") and Mølleåen ("Mill River"). Omløbsåen runs west around the city centre to meet Vejle River, while Mølleåen flows through the city and empties into Vejle River just south of the city centre.