Engelberger Aa

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Engelberger Aa
The Aaschlucht gorge
Location
Country	Switzerland
Physical characteristics
Source
• location	West of Surenenpass
Mouth	Lake Lucerne
• coordinates	46°58′44″N 8°25′31″E / 46.97889°N 8.42528°E / 46.97889; 8.42528
• elevation	433 m (1,421 ft)
Length	50 km (31 mi)
Basin size	230 km2 (89 sq mi)
Basin features
Progression	Lake Lucerne→ Reuss→ Aare→ Rhine→ North Sea

v t e Engelberger Aa
Legend
near Surenenpass Stierenbach Blackenalp agricultural track Firnbandbach agricultural track Stäuberfall I Stäuberfall II Hohbielbach agricultural track Stäfeli Engelberger Aa Rätzelstöcklibach Alpenrösli foot path foot path Grassenbach agricultural track Windeggbach Schlänggenbrücke Fürenalpbahn Hundsbach Fürenbach Tätschbach Sulzbach Golfplatzbrücke agricultural track Eienwäldli agricultural track agricultural track Dürrbach Bänklialpbrücke foot path foot path Gerschniweg foot path Titlisbahn agricultural track Eugenisee Örtigen foot path Erlebnisweg Aaschlucht ARA Engelberg Arnibach Schiessibach Arnibrügg EWL Obermatt foot bridge and pipeline Eugenibach Luterseebach Mettlen service track Vogelsangbach Grafenort Chaltibach Gerlibach Aawasser Giessmattli Eltschenbach Giessmattlibach service track Fallenbach Muribach Holzbrücke Secklisbach Briggstrasse Wolfenschiessen Oberaustrasse Humligenbach foot path Wissiflüelibach Maria-Rickenbach Steinibach Niederrickenbach Station Oberaustrasse Luzern–Stans–Engelberg railway line Engelbergstrasse Buoholzbach Dallenwil Bürenstrasse foot path KW Hostetten Kasernenstrasse Quarry access road service track Kreuzstrasse A 2 Fadenbrücke Neue Fadenbrücke Ennetbürgerstrasse Strandweg Lake Lucerne

The Engelberger Aa (or Engelbergeraa) is a river in Switzerland. It rises west of the Surenenpass in the Canton of Uri, flows through the valley of Engelberg (Obwalden) and Nidwalden. At Buochs it flows into Lake Lucerne and is therefore a tributary of the Reuss, which drains the lake.