Its total length is 95 km (59 mi), and its basin area is 889 km2 (343 sq mi).[3] The Prüm rises in the Schneifel hills, north of the town of Prüm, close to the border with Belgium. It flows southward through Prüm, Waxweiler, Holsthum, and Irrel. The Prüm discharges to the Sauer in Minden, on the border with Luxembourg, three kilometres east of Echternach. The largest tributary of the Prüm is the Nims.
Catchment and tributaries
The catchment of the Prüm is 888.758 km2 (343.151 sq mi)[1] in area. The largest tributaries of the Prüm are (l = left bank (dark blue), r = right bank (light blue)):
^Combined gauge data from Prümzurlay on the Prüm and Alsdorf-Oberecken on its confluence with the Nims, increased by the remaining catchment area (51.2 km²) with a (low estimate) Mq of 10 L/s km²
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