Djérem (river)

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Djérem
Catchment area of ​​the Sanaga with the Djérem and the Lac de Mbakaou (middle slightly right)

Catchment area of ​​the Sanaga with the Djérem and the Lac de Mbakaou (middle slightly right)

Data
location CameroonCameroon Cameroon
River system Sanaga
Drain over Sanaga  → Bay of Bonny
origin Confluence of the source streams near the N 1 between Manbaka and Gombila
6 ° 44 '41 "  N , 14 ° 7' 36"  O
Source height 1155  m
confluence with the Lom to Sanaga Coordinates: 5 ° 19 ′ 26 ″  N , 13 ° 23 ′ 52 ″  E 5 ° 19 ′ 26 ″  N , 13 ° 23 ′ 52 ″  E
Mouth height 634  m
Height difference 521 m
Bottom slope 1.3 ‰
length 394 km
Catchment area over 30,000 km²
Discharge at the Mbakaou
A Eo gauge : 20,200 km²
NNQ (min. Month Ø)
MNQ 1959–1970
MQ 1959–1970
Mq 1959–1970
MHQ 1959–1970
HHQ
25.2 m³ / s
41 m³ / s
422 m³ / s
20.9 l / (s km²)
1179 m³ / s
2090 m³ / s
Drain MQ
566 m³ / s
Left tributaries Merou
Right tributaries Vina , Meng , Mekay, Mekie
Reservoirs flowed through Lac de Mbakaou
Medium-sized cities Tibati

The Djérem is a river in Cameroon .

course

It has its source in several headwaters in the Adamaua highlands , near the city of Meiganga . It flows mainly in a south-westerly direction until it flows into the Lac de Mbakaou at Tibati . There it turns to the south-southeast and forms the Sanaga northwest of Deng Deng together with the Lom . The river flows through the Mbam Djerem National Park .

Graphic representation of the bottom slope of the Djérem

Reservoirs

At Tibati, the Djérem is dammed up to form the Lac de Mbakaou , an artificial reservoir. However, the energy available at the dam is not used to generate electricity. The national energy producer Eneo (formerly AES Sonel) uses the reservoir, in addition to the Bamendjing , the Mapé and other smaller ones, to regulate the amount of water in the Sanaga. This optimizes fluctuations in favor of the electricity generating dams Song Loulou and Édéa near the capital Yaoundé .

Hydrometry

The flow rate of the river was measured in m³ / s at the Mbakaou Reservoir, at about 2/3 of the catchment area.

The construction of the Lac de Mbakaou has a strong effect on the runoff behavior. The diagram below shows the discharge before and after the construction of the reservoir.

Individual evidence

  1. a b c d PDF on the Sanaga catchment area (French) Accessed June 12, 2018
  2. Hydropower in Cameroon, p 23; Sebastien Tchuidjang Tchouaha, Bachelor's Thesis.
  3. Etude Environnementale du Barrage de Lom Pangar, PDF on the catchment area of ​​the Lom Pangar Reservoir (French) Accessed June 12, 2018