The Aabach is a small river that runs through the

Swiss Swiss may refer to: * the adjectival form of Switzerland * Swiss people Places * Swiss, Missouri * Swiss, North Carolina *Swiss, West Virginia * Swiss, Wisconsin Other uses *Swiss-system tournament, in various games and sports *Swiss Internation ...

cantons of

Lucerne Lucerne ( , ; High Alemannic German, High Alemannic: ''Lozärn'') or Luzern ()Other languages: gsw, Lozärn, label=Lucerne German; it, Lucerna ; rm, Lucerna . is a city in central Switzerland, in the Languages of Switzerland, German-speaking po ...

and

Aargau Aargau, more formally the Canton of Aargau (german: Kanton Aargau; rm, Chantun Argovia; french: Canton d'Argovie; it, Canton Argovia), is one of the 26 cantons forming the Swiss Confederation. It is composed of eleven districts and its capita ...

, in the

Aare The Aare () or Aar () is a tributary of the High Rhine and the longest river that both rises and ends entirely within Switzerland. Its total length from its source to its junction with the Rhine comprises about , during which distance it descend ...

catchment area. It flows from south to north through the valley called

Seetal The Seetal is a valley in the cantons of Lucerne and Aargau in Switzerland. The valley descends from south to north from near Eschenbach (in the canton of Lucerne) to Lenzburg (in the canton of Aargau), and is drained by the Aabach and the Ro ...

(lit.: ''Lake Valley'') and ends in the Aare.

Course

The Aabach has its origin in

Lake Baldegg __NOTOC__ Lake Baldegg (german: Baldeggersee) is a lake in the Canton of Lucerne, Switzerland. Its area is about 5.2 km2 and its maximum depth is 69 m. See also *List of lakes of Switzerland This article contains a sortable table listin ...

, which is fed by the

Ron Ron is a shortening of the name Ronald. Ron or RON may also refer to: Arts and media * Big Ron (''EastEnders''), a TV character * Ron (''King of Fighters''), a video game character *Ron Douglas, the protagonist in ''Lucky Stiff'' played by Joe A ...

and a number of smaller streams. In the village of

Mosen Mosen is a former municipality in the district of Hochdorf in the canton of Lucerne in Switzerland. On 1 January 2009 it became part of the municipality of Hitzkirch. History Mosen is first mentioned in 1045 as ''Moseheim'' though this comes ...

it empties into Lake Hallwil (the Hallwilersee). The Aabach leaves the lake between the villages of

Boniswil Boniswil is a municipality in the district of Lenzburg in the canton of Aargau in Switzerland. History Boniswil is first mentioned around 1217-22 as ''Bonoltswile''. The village was ruled by the Counts of Lenzburg, then the counts of Kyburg ...

and

Seengen Seengen is a municipality in the district of Lenzburg in the canton of Aargau in Switzerland. Geography Seengen lies in the Seetal valley to the north of Lake Hallwil. The municipality has an area, , of . Of this area, or 51.3% is used ...

Hallwyl Castle Hallwyl Castle (german: Schloss Hallwyl; ) is one of the most important moated castles in Switzerland. It is located on two islands in the River Aabach, just north of the northern end of Lake Hallwil in the municipality of Seengen in the canto ...

, one of the most important water-controlling ''castles'' in Switzerland, sits in the middle of the river on two artificial islands, about north of the northern end of the lake. On the southern outskirts of

Lenzburg Lenzburg is a town in the central region of the Swiss canton Aargau and is the capital of the Lenzburg District. The town, founded in the Middle Ages, lies in the Seetal valley, about 3 kilometres south of the Aare river. Lenzburg and the neigh ...

a tunnel takes much of the flow of the Aabach under the town to rejoin the river in

Niederlenz Niederlenz is a municipality in the district of Lenzburg in the canton of Aargau in Switzerland. History The center of the village comes from a middle Bronze Age settlement and a later Roman era farm. However, the modern village of Niederlen ...

township. It was built as a relief tunnel to mitigate flooding in the town, which had been occasionally severe during the spring runoff. Further on, in the village of Wildegg, the Aabach finally joins the

, right after it was joined from the right by its major tributary, the Bünz, just about upstream.

Economy

Beginning in the second half of the 18th century, the Aabach provided

water-power Hydropower (from el, ὕδωρ, "water"), also known as water power, is the use of falling or fast-running water to Electricity generation, produce electricity or to power machines. This is achieved by energy transformation, converting the Pot ...

that ran

mills Mills is the plural form of mill, but may also refer to: As a name *Mills (surname), a common family name of English or Gaelic origin * Mills (given name) *Mills, a fictional British secret agent in a trilogy by writer Manning O'Brine Places Unit ...

that led to the creation of industry in the valley. these included the cotton-mill in

Seon Seon may refer to: * Seon, Switzerland, a municipality in the canton of Aargau * ''Seon'', a type of arranged marriage in South Korea * Korean Seon, a Zen school of Korean Buddhism * Seon (food), steamed vegetable dishes with fillings in Korean cui ...

, the copper wire works in Wildegg, the

Hämmerli Hämmerli () is a formerly Swiss, now German manufacturer of air guns and firearms aimed mostly at target shooting, especially Olympic events governed by the International Shooting Sport Federation. In 2006, Hämmerli was acquired by Umarex; prod ...

arms factory in Lenzburg, and the Wisa-Gloria works in Lenzburg.

Notes

References

* {{- Rivers of Switzerland Rivers of Aargau Rivers of the canton of Lucerne