Ntem (river)

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Rio Campo
Mouth of the ntem

Mouth of the ntem

location CameroonCameroon Cameroon Gabon Equatorial Guinea
Equatorial GuineaEquatorial Guinea 
River system Ntem
origin Network of small rivers
2 ° 0 ′ 0 ″  N , 12 ° 30 ′ 0 ″  E
Source height about  600  m
muzzle to Bonny Bay Coordinates: 2 ° 21 ′ 0 ″  N , 9 ° 49 ′ 17 ″  E 2 ° 21 ′ 0 ″  N , 9 ° 49 ′ 17 ″  E
Mouth height m
Height difference about 600 m
Bottom slope about 1.3 ‰
length 460 km
Catchment area 31,000 km²
Discharge at the Ngoazik
A Eo gauge : 18,100 km²
NNQ (min. Month Ø)
MNQ 1953–1977
MQ 1953–1977
Mq 1953–1977
MHQ 1953–1977
HHQ (max. Month Ø)
31.9 m³ / s
87.3 m³ / s
288 m³ / s
15.9 l / (s km²)
583 m³ / s
957 m³ / s
A Eo : 31,000 km²
at the mouth
348 m³ / s
11.2 l / (s km²)
Left tributaries Rio Guoro, Rio Bolo, Nye
Right tributaries Biwouma, Ndja, Mvila, Mgoro, Kom
Reservoirs flowed through Memve'ele reservoir

The Ntem is a river in central Africa .


It has its sources in Gabon , in the Minkébé National Park in the Woleu-Ntem province , at about 600 meters, in a narrow network of small rivers. From there it flows in a west - northwest direction, towards the border with Cameroon, where it takes in the Kom . From there it forms the border between the two states over a length of about 30 kilometers. In its further course in a westerly direction it flows through the southwest of Cameroon until it is dammed about 100 kilometers before the confluence with the Memve'ele Reservoir , a heavily branched lake with many islands that is used for energy generation.

Memve'ele reservoir

After the reservoir, it flows in a south-westerly direction, along the Campo Ma'an National Park , towards the border with Equatorial Guinea , which it reaches about 50 kilometers from the mouth. There the river divides into a main arm and the northern branch, the Bangola, and forms with it the island "Ila Dipikar". Shortly before the estuary, the Ntem, which is usually referred to as the Rio Campo, joins the Bangola again. In the south it borders on the mouth of the Rio Campo nature reserve , and in the north on the Campo Ma'an National Park.


The flow rate of the river was measured in m³ / s on the border with Gabon in Ngoazik, at about 1/2 of the catchment area

Flora and fauna

Boulengeromyrus knoepffleri

The Ntem flows through or borders on various nature reserves ( Campo Ma'an National Park , Rio Campo Nature Reserve , Minkébé National Park ). In addition, large areas of its catchment area are in sparsely populated areas. The endemic Boulengeromyrus knoepffleri lives in the river.

Individual evidence

  1. a b c PDF on the hydrology of Cameroon (French) Accessed June 22, 2018
  2. Poissons d'eaux douces et saumâtresde basse Guinée, ouest de l'Afrique centrale