Wiehl (Agger)

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Wiehl
The Wiehl at the mill bridge in the municipality of Wiehl

The Wiehl at the mill bridge in the municipality of Wiehl

Data
Water code DE : 27284
location Germany
River system Rhine
Drain over Agger  → Sieg  → Rhine  → North Sea
source north of Hahn
50 ° 58 ′ 34 ″  N , 7 ° 45 ′ 51 ″  E
Source height 433  m above sea level NHN
muzzle near Wiehlmünden in the Agger coordinates: 50 ° 59 ′ 15 ″  N , 7 ° 28 ′ 54 ″  E 50 ° 59 ′ 15 ″  N , 7 ° 28 ′ 54 ″  E
Mouth height 145  m above sea level NHN
Height difference 288 m
Bottom slope 8.6 ‰
length 33.6 km
Catchment area 140.721 km²
Discharge
A Eo : 140.721 km²
at the mouth 		MNQ
MQ
Mq
 		454.6 l / s
3.48 m³ / s
24.7 l / (s km²)
Left tributaries Aubach , Streesharthbach, Asbach , Mottelbach, Ülpebach, Molbach
Right tributaries Hamerter Bach, Dreschhauser Bach, Heisterbach, Dreisbach, Oberholzener Bach, Alpebach
Reservoirs flowed through Wiehltalsperre
Medium-sized cities Wiehl

The Wiehl is a 33.6 km long orographic left tributary of the Agger in North Rhine-Westphalia , Germany . It is the longest flowing body of water only in the Oberbergischer Kreis and the third longest Agger tributary.

geography

course

The Wiehl rises in the Bergisches Land in the municipality of Reichshof . Their source is located about 700 m north of the Hahn district on the southern slope of the Silberkuhle ( 514.6  m ) at an altitude of 446  m above sea level. NHN .

First the Wiehl flows in a southerly direction and flows through the Reichshofener district Wiehl. At Wildbergerhütte it is fed by the Aubach ( Lage ) and turns its course to the west. Between Nespen and Brüchermühle it is dammed up to form the Wiehl reservoir. After passing the Brüchermühle, it is dammed up to the Bieberstein reservoir. From here on it flows primarily in a north-westerly direction.

After the Wiehl has flowed through the villages of Oberwiehl , Wiehl , Bielstein and Weiershagen, it flows into Wiehlmünden at 145  m above sea level. NHN in the Agger .

Tributaries

In the following the tributaries of the Wiehl are named. The orographic position, the location of the mouth and the mouth height are given.

  • Aubach (left) at Wildbergerhütte at 309  m above sea level. NHN
  • Hamerter Bach (right) near Hamert at 304  m above sea level. NHN
  • Dreschhauser Bach (right) to Nespen in the Wiehltalsperre at 292  m above sea level. NHN
  • Streesharthbach (left) in a pre-storage basin of the Wiehltalsperre at 304  m above sea level. NHN
  • Asbach (left) at Brüchermühle at 228  m above sea level. NHN
  • Heisterbach (right) before Oberwiehl at 198  m above sea level. NHN
  • Dreisbach (right) near Oberwiehl at 194  m above sea level. NHN
  • Oberholzener Bach (right) before Wiehl at 191  m above sea level. NHN
  • Mottelbach (left) near Wiehl at 184  m above sea level. NHN
  • Alpebach (right) to Wiehl at 174  m above sea level. NHN
  • Ülpebach (left) near Bielstein at 163  m above sea level. NHN
  • Molbach (left) before Wielmünden at 146  m above sea level. NHN

Flood

On May 3, 2001 , after torrential rains, floods, known as the flood of the century, eroded streets and partially tore them away. Between 4 p.m. and 8 p.m., 110 liters of rain fell per square meter. The monthly average in NRW is only 100 liters.

Individual evidence

  1. ↑ a b German basic map 1: 5000
  2. ↑ a b Topographical Information Management, Cologne District Government, Department GEObasis NRW ( information ) (query on November 14, 2010)
  3. ↑ Modeled discharge values according to the specialist information system ELWAS, Ministry for Climate Protection, Environment, Agriculture, Nature and Consumer Protection NRW ( notes )