Sarner Aa (river)

The Sarner Aa is a 28 km (17 mi) long river in the Swiss canton of Obwalden. It drains the area to the eastern side of the Brünig Pass, flowing through the Lake Lungern, Lake Sarnen and the Wichelsee, before entering Lake Lucerne near Alpnach. It goes by several names over its length, being known as the Lauibach upstream of the Lungerersee, and the Aa or Aawasser between the Lungerersee and Lake Sarnen.

Along its length, the Sarner Aa flows through or near the settlements of Lungern, Giswil, Sachseln, Sarnen, Kerns and Alpnach.

The Brünig railway line follows the valley of the Sarner Aa in its descent from the Brünig Pass towards Lucerne.

References

Coordinates: 46°47′01″N 8°05′53″E / 46.78361°N 8.09806°E / 46.78361; 8.09806

Aa River

Aa is the name of a large number of small European rivers. Aa originated from an Indo-European word meaning water, and it can be seen in the German ach or aach or the North Germanic a or aa.

Aa (river, France)

The Aa is an 89-kilometre (55 mi) long river in northern France. Its source is near the village Bourthes. It flows through the following départements and cities:

The Aa flows into the North Sea near Gravelines, very close to the north-eastern limit of the English Channel.

The name Aa is old-Dutch and means water, and can be traced back to its original Indo-European form as such.

Geography

The river's geography can be divided into two styles. First, from its source, in the Artois Hills, to Saint-Omer, it is a small chalk stream, a small version of the Somme. Second, from Saint-Omer seawards, approximately 29 kilometres (18 mi), it is a navigable waterway with branch canals leading towards Calais and Dunkirk and the Canal de Neufossé heading inland into the French canal system.

History

Saint-Omer formerly lay at the head of its estuary while to seaward; Calais lay on its western margin and Bergues, now inland from Dunkirk, on its eastern one. By the time of the Viking settlements on this coast, Dunkirk was developing on the dunes, offshore across the estuarine marsh from Bergues. Gravelines was the later port at the seaward end of the river as it became, after the area of the estuary was reclaimed. The dates of these events are imprecise but the modern pattern was firmly established by 1588, the time of the Spanish Armada, when an approximation to the modern course of the lowland river formed the boundary between the Spanish Netherlands and France.

Aa (Meuse)

The Aa is a small river in the Netherlands. It rises near Nederweert in the southeastern province of Limburg, in the Peel region. It flows northwest through the province of North Brabant towards 's-Hertogenbosch, roughly along the Zuid-Willemsvaart canal. In 's-Hertogenbosch, at the confluence of the Aa and the Dommel, the river Dieze is formed, which flows into the Meuse a few km further. The main cities and towns along the Aa's course are Asten, Helmond, Veghel and 's-Hertogenbosch.

Coordinates: 51°39′0.6″N 5°27′18″E / 51.650167°N 5.45500°E / 51.650167; 5.45500