Hamme (river)

The Hamme (in its upper reaches Giehler Bach) is a 48 km (30 mi) long river in Germany, Lower Saxony, north-east of Bremen. Its source is north of Osterholz-Scharmbeck. It flows through the moors north-east of Bremen called Teufelsmoor, and meets the river Wümme in Ritterhude. From this junction, the river is called Lesum. The Lesum flows into the river Weser in Bremen-Vegesack.

Hamme
Course of the Giehler Bach and Hamme from Langer Heide into the Teufelsmoor to its mouth on the Lesum
Location
CountryGermany
StateLower Saxony
Physical characteristics
Source 
  locationLange Heide (Giehler Bach)
  coordinates53°15′05″N 8°45′09″E
  elevation45 m above sea level (NN)
Mouth 
  location
Joins the Wümme near Ritterhude to become the Lesum
  coordinates
53°10′22″N 8°44′40″E
  elevation
2 m above sea level (NN)
Length48.5 km (30.1 mi)
Basin size549 km2 (212 sq mi)
Basin features
ProgressionLesum→ Weser→ North Sea
LandmarksSmall towns: Ritterhude
Tributaries 
  leftSchaufleet, Kollbeck, Rummeldeisbeek, Schmoo, Neu Sankt Jürgener Schiffgraben, Umbeck, Wörpedahler Graben, Semkenfahrt, Kirchenfleet, Neugrabenfleet, Deichkampfleet
  rightButterweidengraben, Beek, Fankstaken, Osterholzer Hafenkanal, Scharmbecker Bach,
NavigableFrom the transition of the Oste-Hamme Canal into the Kollbeck (this is also where the kilometre marking begins) to the confluence with the Lesum. The main limiting factors are the locks and the nature conservation regulations.

On the river Hamme there are many water-sport clubs, for example the Wassersportclub Hamme e.V. (watersports-club Hamme), the Ruder-Verein Osterholz-Scharmbeck von 1901 e.V. (Rowing Club Osterholz-Scharmbeck since 1901) and the Segel Club Hamme e.V. (Sailing Club Hamme).

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