Aar
Mouth
Location
Country	Germany
State	Hesse
Physical characteristics
Mouth
• location	Dill
• coordinates	50°41′52″N 8°18′28″E / 50.6977°N 8.3079°E / 50.6977; 8.3079
Length	20.6 km (12.8 mi)
Basin features
Progression	Dill→ Lahn→ Rhine→ North Sea

Aar is a river of Hesse, Germany. It flows for 20.6 kilometres (12.8 mi) into the Dill near Herborn.^[1]

Tributaries

The tributaries of the Aar are as follows:^[1]

• Brühlsbach (right) - 3.3 km
• Stadterbach (left) - 6.6 km
• Wilsbach (right) - 6.3 km
• Weidbach (right) - 5.9 km
• Meerbach (right) - 5.2 km
• Siegbach (right) - 12.2 km
• Gellenbach (left) - 4.2 km
• Weibach (right) - 6.3 km
• Gettenbach (left) - 3.6 km
• Ballersbach (left) - 3.2 km
• Essenbach (right) - 3.3 km
• Dernbach (left) - 2.7 km
• Monzenbach (right) - 4.5 km