Gelmke
The Gelmke just upstream of the E 11 trail
Location
Country	Germany
State	Lower Saxony
Reference no.	DE: 48214
Physical characteristics
Source
• location	1.45 km (0.90 mi) ENE of the Dicker Kopf in the Harz
• elevation	ca. 510 m above sea level (NN)
Mouth
• location	near Oker (Goslar) into the Abzucht
• coordinates	51°54′36″N 10°28′34″E / 51.910°N 10.476°E / 51.910; 10.476
Length	ca. 6 km (3.7 mi)
Basin size	4.6 km2 (1.8 sq mi) [1]
Basin features
Progression	Abzucht→ Oker→ Aller→ Weser→ North Sea
Tributaries
• right	unnamed stream on the Brautstein

The Gelmke is a small stream, roughly 6 kilometres (3.7 mi) long, and right-hand tributary of the Abzucht in Lower Saxony, Germany. The stream flows through part of the town of Goslar.

Geography

The Gelmke rises in the Gelmke Valley (Gelmketal) at about 610 m above sea level (NN). Its source lies east-northeast of the hill known as the Dicker Kopf (668 m) and north of the Eichenberg (670 m).^[2] It flows initially northwards through a densely wooded valley, where it is crossed by the E 11 European long-distance trail before emerging into open fields and swinging east, just above the old Goslar sewage ponds. It then heads north again to join the Abzucht near Goslar station.^[2]