Wiehl (Agger)
| Wiehl | |
|---|---|
The Wiehl by the Mill Bridge (Mühlenbrücke) in the municipality of Wiehl
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| Location | North Rhine-Westphalia, Germany |
| Reference no. | DE: 27284 |
| Basin features | |
| Main source | north of Hahn 433 m above sea level (NHN) 50°58′34.28″N 7°45′50.60″E / 50.9761889°N 7.7640556°ECoordinates: 50°58′34.28″N 7°45′50.60″E / 50.9761889°N 7.7640556°E |
| River mouth | near Wiehlmünden into the Agger 145 m above sea level (NHN) 50°59′15″N 7°28′54″E / 50.9875201°N 7.4817169°E |
| Progression | Agger → Sieg → Rhine → North Sea |
| River system | Rhein |
| Basin size | 140.721 km² |
| Landmarks | Large towns: Wiehl |
| Physical characteristics | |
| Length | 33.611 km |
The Wiehl is a 33.6-kilometre-long, orographically left tributary of the River Agger in the German state of North Rhine-Westphalia. It is the longest river situated entirely within the county of Oberbergischer Kreis and the third longest tributary of the Agger.
The river rises in the region of Bergisches Land in the municipality of Reichshof. Its source is located about 700 metres north of the village of Hahn on the southern slopes of the Silberkuhle (514.6 m) at a height of 446 m above sea level (NHN). The Wiehl initially flows in a southerly direction and passes through the parish of Wiehl. Near Wildbergerhütte it turns towards the west. Between Nespen and Brüchermühle it is impounded by the Wiehl Dam. After passing Brüchermühle it is impounded again, this time by the Stauweiher Bieberstein. From here it flows mainly in a northwesterly direction. After passing through the parishes of Oberwiehl, Wiehl, Bielstein and Weiershagen, it empties into the Agger near Wiehlmünden at a height of 145 m above NHN.
The following is a list of Wiehl tributaries with their orographic orientation (left/right), location of their mouth and elevation at the mouth.
On 3 May 2001, following torrential rain, what were described as hundred-year floods washed aways parts of some roads. Between 4 and 8 pm, 110 litres of rain fell per square metre. The average monthly precipitation in North Rhine-Westphalia is only 100 litres.
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Wikipedia