Nyong (river)
| Nyong | ||
 Course of the Nyong in Cameroon |
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| Data | ||
| location |
 Cameroon
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| River system | Nyong | |
| source | east of Abong-Mbang , approximately: 3 ° 52 ′ 0 ″ N , 13 ° 28 ′ 0 ″ E |
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| Source height | 690 m | |
| muzzle | in Bonny Bay Coordinates: 3 ° 15 ′ 39 " N , 9 ° 54 ′ 16" E 3 ° 15 ′ 39 " N , 9 ° 54 ′ 16" E |
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| Mouth height | 0 m | |
| Height difference | 690 m | |
| Bottom slope | 1 ‰ | |
| length | 690 km | |
| Catchment area | 27,800 km² | |
| Discharge at the Déhané A Eo gauge : 26,400 km² Location: 45 km above the mouth |
NNQ (min. Month Ø) MNQ 1950–1977 MQ 1950–1977 Mq 1950–1977 MHQ 1950–1977 HHQ (max. Month Ø) |
40 m³ / s 145 m³ / s 446 m³ / s 16.9 l / (s km²) 926 m³ / s 1226 m³ / s |
| Left tributaries | Long Mafok , Soo , Soumou, Kama | |
| Right tributaries | Kom, Mfoumou , Afamba, Ato, Mefou, Akono, Liyeke, Kéllé | |
| Small towns | Abong-Mbang , Mbalmayo | |
| Communities | Akonolinga | |
| Residents in the catchment area | 1,179,200 (1994) | |
 The Nyong |
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The Nyong ( Njong in German colonial times ) is a river in Cameroon .
course
The river, like the Boumba , has its sources in a dense network of rivers about 30 kilometers east of the city of Abong-Mbang in a swamp area in the rainforest. It has only a very slight gradient in the upper reaches and is therefore navigable for smaller ships shortly after the source up to the so-called Tappenbeck rapids. The lower course again shows only a very slight gradient. It forms the border between the two regions Sud and Littoral . In the estuary it is connected to the catchment areas of the Ntem and the Sanaga by a large number of canals .
Tappenbeck rapids
They are named after the Africa explorer Hans Tappenbeck . The rapids arise when the Nyong leaves the highlands of South Cameroon and overcomes over 600 meters in altitude over a distance of around 100 kilometers (this corresponds to an average of 6 ‰).
Hydrometry
The flow rate of the river was measured in Déhané, about 45 km from the mouth, in m³ / s.
River history
There is a theory that the dja did not once drain into the Congo . The original course followed the current Lobo tributary and its tributary the Mintele to the place Abangok, 8 km northwest of Zoétélé , where the watershed is today. From there over the Awout, a tributary of the Soo , to the Nyong. This had increased the catchment area of the Nyong by 10,000 km². The sudden change in direction of the Dja at the mouth of the Lobo and the subsequent slope are indications that speak for it. In the meantime, a dam has been built shortly after the estuary.