Amper

Amper
The Amper south of Fürstenfeldbruck
The Ammer/Amper system within the Isar basin
Location
CountryGermany
StateBavaria
Physical characteristics
Source 
  locationNorthern Limestone Alps
Mouth 
  location
Isar
  coordinates
48°30′1″N 11°57′24″E / 48.50028°N 11.95667°E / 48.50028; 11.95667
Length190 km (120 mi)
Basin size3,248 km2 (1,254 sq mi)
Discharge 
  average±45 m3/s (1,600 cu ft/s)
Basin features
ProgressionIsarDanubeBlack Sea

The Amper, called the Ammer upstream of the Ammersee, through which it runs, is the largest tributary of the Isar in southern Bavaria, Germany. It flows generally north-eastward, reaching the Isar in Moosburg, about 185 kilometres (115 mi) from its source in the Ammergau Alps, with a flow of 45 m3/s. Including its tributary, Linder, it is 209.5 km (130.2 mi) long. Major tributaries are the Glonn, which rises near Augsburg; the Würm, which is the outflow of Lake Starnberg; and the Maisach.