The Aabach (also ''Aa'', or ''Ustermer Aa'' for disambiguation with the

Mönchaltorfer Aa Greifensee is a lake in the canton of Zürich in Switzerland. Geography Greifensee is located to the east of the city of Zurich, separated by the Pfannenstiel from Lake Zürich. As the second largest lake in the canton of Zurich (Lake Zu ...

) is a minor river in the

canton of Zürich The canton of Zürich (german: Kanton Zürich ; rm, Chantun Turitg; french: Canton de Zurich; it, Canton Zurigo) is a Swiss canton in the northeastern part of the country. With a population of (as of ), it is the most populous canton in the ...

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

. At a length of , it flows from

Pfäffikersee Pfäffikersee (or ''Lake Pfäffikon'') is a lake in the canton of Zürich, Switzerland, near the town of Pfäffikon. It is 2.5 km long and 1.3 km wide at the middle. The lake was created in the last ice age when a moraine blocked off the ...

to the Greifensee. Its valley is known as ''

Aatal The Aatal (Aa Valley) is a narrow, steep valley of about depth surrounded by forests. It is situated between the towns of Wetzikon and Uster in the canton of Zürich, Switzerland. Through the valley flows the river Aabach, which starts at t ...

'' ("Aa Valley"), eponymous of the settlement Aathal.

Gallery

File:Robenhauser Riet - Wetzikon - Pfäffikersee - Seegräben IMG 4877.JPG, Aabach on

Lake Pfäffikon A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger ...

File:Aabach (Wetzikon) IMG 4901.jpg, Aabach reservoir in

Wetzikon Wetzikon is a small town in the Zurich Highlands (Zürcher Oberland) area of Switzerland, in the district of Hinwil in the canton of Zürich. Geography The municipality Wetzikon has an area of . Of this area, 42.4% is used for agricultural p ...

File:Ustermer AA en Aatal-barajho.jpg, Aabach nearby Aathal-

Seegräben Seegräben is a village and a Municipalities of Switzerland, municipality in the district of Hinwil (district), Hinwil in the Cantons of Switzerland, canton of Zurich (canton), Zürich in Switzerland. Besides the village of Seegräben itself, the m ...

(Aa Valley) File:Uster - Aa IMG 3552.jpg, ''Usterner Aa'' in

Uster Uster (High Alemannic: ''Uschter'') is a town and the capital of the Uster District in the Swiss canton of Zürich. It is the third largest town in the canton of Zürich, with almost 35,000 inhabitants, and is one of the twenty largest towns ...

File:Greifensee - Ustermer Aa IMG 2512.JPG, Usterner Aa on Lake Greifen

References

* Rivers of Switzerland Rivers of the canton of Zürich 1Aabach Pfäffikersee {{Switzerland-river-stub