Congo River

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Coordinates: 06°04′30″S 12°27′00″E / 6.07500°S 12.45000°E / -6.07500; 12.45000
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For other uses, see Congo River (disambiguation).
Congo River
Fleuve Congo
Zaire River
Fleuve Zaïre
The Congo River near Kisangani, Congo
The drainage basin of the Congo River
Physical characteristics
SourceLualaba River
 • locationBoyoma Falls
 • elevation1,590 m (5,220 ft)
MouthAtlantic Ocean
 • coordinates
06°04′30″S 12°27′00″E / 6.07500°S 12.45000°E / -6.07500; 12.45000
Length4,700 km (2,900 mi)
Basin size4,014,500 km2 (1,550,000 sq mi)[1]
Width 
 • minimum200 m (660 ft) (Lower Congo); 1,440 m (4,720 ft) (Middle Congo)[2][3][4]
 • maximum19,000 m (62,000 ft) (mouth)
Depth 
 • average12 to 75 m (39 to 246 ft) (Lower Congo); 5 to 22 m (16 to 72 ft) (Middle Congo)[2][3][4]
 • maximum220 m (720 ft) (Lower Congo); 50 m (160 ft) (Middle Congo)[2][3][4]
Discharge 
 • locationAtlantic Ocean (near mouth)
 • average41,200 m3/s (1,450,000 cu ft/s)[1]
 • minimum23,000 m3/s (810,000 cu ft/s)[1]
 • maximum75,000 m3/s (2,600,000 cu ft/s)[1]
Discharge 
 • locationKinshasa, Brazzaville (498 km upstream of mouth; Basin size: 3,659,900 km2 (1,413,100 sq mi)
 • average(Period: 1902–2019)40,500 m3/s (1,430,000 cu ft/s)[6][5]
 • minimum22,000 m3/s (780,000 cu ft/s) (1905)[5]
 • maximum77,000 m3/s (2,700,000 cu ft/s) (1961)[5]
Discharge 
 • locationKisangani (2,240 km upstream of mouth; Basin size: 974,330 km2 (376,190 sq mi)
 • average(Period: 1951–2012)7,640 m3/s (270,000 cu ft/s)[6][5]
 • minimum3,240 m3/s (114,000 cu ft/s)[7]
 • maximum13,930 m3/s (492,000 cu ft/s)[7]
Discharge 
 • locationKindu (2,705 km upstream of mouth; Basin size: 810,440 km2 (312,910 sq mi)
 • average2,213 m3/s (78,200 cu ft/s)[7]
 • minimum640 m3/s (23,000 cu ft/s)[7]
 • maximum7,640 m3/s (270,000 cu ft/s)[7]
Discharge 
 • locationBukama (3,695 km upstream of mouth; Basin size: 63,090 km2 (24,360 sq mi)
 • average322 m3/s (11,400 cu ft/s)[7]
 • minimum52 m3/s (1,800 cu ft/s)[7]
 • maximum1,229 m3/s (43,400 cu ft/s)[7]
Basin features
Tributaries 
 • leftLubudi, Lomami, Lulonga, Ikelemba, Ruki, Kasai, Inkisi
 • rightLufira, Luvua, Lukuga, Luama, Elila, Ulindi, Lowa, Maiko, Lindi, Aruwimi, Itimbiri, Mongala, Ubangi, Sangha, Likouala, Alima, Léfini

The Congo River (Kongo: Nzâdi Kôngo, French: Fleuve Congo, Portuguese: Rio Congo), formerly also known as the Zaire River, is the second-longest river in Africa, shorter only than the Nile, as well as the third-largest river in the world by discharge volume, following the Amazon and Ganges rivers. It is the world's deepest recorded river, with measured depths of around 220 m (720 ft).[8] The Congo-Lualaba-Chambeshi River system has an overall length of 4,700 km (2,900 mi), which makes it the world's ninth-longest river. The Chambeshi is a tributary of the Lualaba River, and Lualaba is the name of the Congo River upstream of Boyoma Falls, extending for 1,800 km (1,100 mi).

Measured along with the Lualaba, the main tributary, the Congo River has a total length of 4,370 km (2,720 mi). It is the only major river to cross the Equator twice.[9] The Congo Basin has a total area of about 4,000,000 km2 (1,500,000 sq mi), or 13% of the entire African landmass.

Name[edit]

The name Congo/Kongo originates from the Kingdom of Kongo once located on the southern bank of the river. The kingdom in turn was named after the indigenous Bantu Kongo people, known in the 17th century as "Esikongo".[10] South of the Kingdom of Kongo proper lay the similarly named Kakongo kingdom, mentioned in 1535. Abraham Ortelius labelled "Manicongo" as the city at the mouth of the river in his world map of 1564.[a] The tribal names in Kongo possibly derive from a word for a public gathering or tribal assembly. The modern name of the Kongo people or Bakongo was introduced in the early 20th century.[citation needed]

The name Zaire is from a Portuguese adaptation of a Kikongo word, nzere ("river"), a truncation of nzadi o nzere ("river swallowing rivers").[11] The river was known as Zaire during the 16th and 17th centuries; Congo seems to have replaced Zaire gradually in English usage during the 18th century, and Congo is the preferred English name in 19th-century literature, although references to Zahir or Zaire as the name used by the inhabitants remained common.[12] The Democratic Republic of the Congo and the Republic of the Congo are named after it, as was the previous Republic of the Congo which had gained independence in 1960 from the Belgian Congo. The Republic of Zaire during 1971–1997 was also named after the river's name in French and Portuguese.

Basin and course[edit]

Aerial view from the west of the Congo River with upstream half of Pool Malebo and Mbamu
Main article: Congo Basin

The Congo's drainage basin covers 4,014,500 km2 (1,550,000 sq mi),[1] an area nearly equal to that of the European Union. The Congo's discharge at its mouth ranges from 23,000 to 75,000 m3/s (810,000 to 2,650,000 cu ft/s), with an average of 41,000 m3/s (1,400,000 cu ft/s).[1] The river transports annually 86 million tonnes of suspended sediment to the Atlantic Ocean and an additional 6% of bedload.[13]

The river and its tributaries flow through the Congo rainforest, the second largest rainforest area in the world, after the Amazon rainforest in South America. The river also has the second-largest flow in the world, behind the Amazon; the second-largest drainage basin of any river, behind the Amazon; and is one of the deepest rivers in the world, at depths greater than 220 m (720 ft).[8][14] Because its drainage basin includes areas both north and south of the Equator, its flow is stable, as there is always at least one part of the river experiencing a rainy season.[15]

The sources of the Congo are in the highlands and mountains of the East African Rift, as well as Lake Tanganyika and Lake Mweru, which feed the Lualaba River, which then becomes the Congo below Boyoma Falls. The Chambeshi River in Zambia is generally taken as the source of the Congo in line with the accepted practice worldwide of using the longest tributary, as with the Nile River.

The Congo flows generally toward the northwest from Kisangani just below the Boyoma Falls, then gradually bends southwestward, passing by Mbandaka, joining with the Ubangi River and running into the Pool Malebo (Stanley Pool). Kinshasa (formerly Léopoldville) and Brazzaville are on opposite sides of the river at the Pool, where the river narrows and falls through a number of cataracts in deep canyons (collectively known as the Livingstone Falls), running by Matadi and Boma, and into the sea at Muanda.

Lower Congo constitutes the 'lower' parts of the great river; that is the section of the river from the river mouth at the Atlantic coast to the twin capitals of Brazzaville and Kinshasa. In this section of the river, there are two significant tributaries, both on the left or south side. The Kwilu River originates in the hills near the Angolan border and enters the Congo some 100 km upstream from Matadi. The other is the Inkisi River, that flows in a northerly direction from the Uíge Province in Angola to the confluence with the Congo at Zongo some 80 km downstream from the twin capitals. Because of the vast number of rapids, in particular the Livingstone Falls, this section of the river is not operated continuously by riverboats.

Drainage basin[edit]

The Congo basin covers ten countries and accounts for about 13% of Africa. The highest point in the Congo basin is in the Ruwenzori Mountains, at an altitude of around 4,340 m (14,240 ft) above sea level.

Main article: Congo Basin

Distribution of the Congo basin area between countries:[16]

Country Area

(km2)

(%)
Angola Angola 305,760 8.2
Burundi Burundi 18,728 0.51
Cameroon Cameroon 85,300 2.3
Central African Republic Central African Republic 402,000 10.8
Democratic Republic of the Congo Democratic Republic of the Congo 2,307,800 62.15
Gabon Gabon 1,146 0.03
Republic of the Congo Republic of the Congo 248,400 6.7
Rwanda Rwanda 382 0.01
Tanzania Tanzania 166,800 4.5
Zambia Zambia 176,600 4.8
For the Congo basin 3,712,316 100.0

The most important hydrological stations along the Congo river are:[16]

Station River

kilometer

(rkm)

Altitude

(m)

Basin size

(km2)

Multiannual

average

discharge

Start

year

(m3/s)
Lower Congo
Banana 0 0 3,730,740 1915 41,400
Inga 188 78 1959 41,100
Kinshasa,

Brazzaville

498 269 3,659,900 1902 40,500
Middle Congo
Mossaka 898 289 2,490,000
Mbandaka 1,157 303 1,683,800 1907 19,000
Yangambi 2,133 371 1,069,100 1907 8,358
Kisangani 2,240 380 974,330 1907 7,079
Upper Congo

(Lualaba)

Boyoma Falls 2,310 400 1907 6,550
Ubundu 2,390 418 1907 6,378
Kindu 2,705 448 810,440 1912 2,213
Ankoro 3,455 556 171,000 1935 901
Bukama 3,695 567 63,090 1933 322

Discharge[edit]

The Congo River discharge at Kinshasa/Brazzaville stations since the start of measurements (1902 to 2021):[6][5][17]

Water

year

Discharge (m3/s) Water

year

Discharge (m3/s) Water

year

Discharge (m3/s)
Min Mean Max Min Mean Max Min Mean Max
1902/03 30,850 38,670 51,020 1942/43 31,190 42,150 55,200 1982/83 24,360 35,560 49,020
1903/04 28,700 40,680 53,850 1943/44 27,090 39,360 50,270 1983/84 24,000 33,310 51,700
1904/05 22,350 34,710 49,960 1944/45 30,960 38,890 56,250 1984/85 27,000 38,810 51,300
1905/06 27,280 38,820 48,310 1945/46 28,120 38,820 61,300 1985/86 24,200 36,740 55,400
1906/07 23,980 34,190 45,680 1946/47 34,900 43,470 50,350 1986/87 24,900 38,700 60,400
1907/08 28,350 38,950 65,760 1947/48 33,560 44,210 62,740 1987/88 25,700 39,110 57,300
1908/09 35,460 45,330 54,350 1948/49 29,080 39,610 53,960 1988/89 25,600 37,830 62,800
1909/10 29,960 41,920 60,160 1949/50 29,480 42,140 56,940 1989/90 24,300 35,970 55,800
1910/11 26,080 38,220 55,440 1950/51 28,150 39,614 62,780 1990/91 33,600 40,880 54,100
1911/12 30,930 40,240 53,260 1951/52 31,900 40,360 55,020 1991/92 24,000 34,640 49,100
1912/13 27,730 36,380 42,280 1952/53 25,850 37,100 49,370 1992/93 27,100 36,790 58,100
1913/14 26,280 35,860 56,810 1953/54 27,690 37,870 51,450 1993/94 30,100 38,730 53,000
1914/15 25,220 34,090 47,450 1954/55 32,220 44,130 60,790 1994/95 28,500 39,970 65,400
1915/16 27,760 38,500 59,680 1955/56 30,490 42,420 55,490 1995/96 29,500 40,860 58,900
1916/17 29,270 42,200 55,920 1956/57 32,840 42,300 54,520 1996/97 28,400 38,370 57,600
1917/18 27,440 34,850 43,840 1957/58 26,010 35,330 50,870 1997/98 32,100 45,000 71,000
1918/19 23,740 33,650 44,630 1958/59 25,440 36,500 57,720 1998/99 31,100 41,230 62,200
1919/20 27,230 37,880 59,540 1959/60 35,380 46,450 59,540 1999/00 28,700 40,120 69,300
1920/21 30,590 40,940 55,850 1960/61 35,060 47,410 80,830 2000/01 33,900 42,960 55,800
1921/22 25,830 37,980 58,140 1961/62 40,420 55,240 76,300 2001/02 29,600 43,070 66,800
1922/23 29,540 41,080 59,870 1962/63 39,630 51,230 67,950 2002/03 33,600 43,120 64,800
1923/24 30,610 42,620 63,370 1963/64 32,930 48,510 69,410 2003/04 25,800 38,150 56,700
1924/25 32,180 41,330 64,170 1964/65 28,370 43,100 62,350 2004/05 25,600 37,640 57,500
1925/26 31,770 43,920 61,660 1965/66 36,670 48,380 63,040 2005/06 26,800 38,090 53,100
1926/27 27,000 37,710 47,350 1966/67 31,420 41,770 65,540 2006/07 31,900 42,160 63,900
1927/28 31,430 41,120 51,730 1967/68 36,970 46,960 58,560 2007/08 30,700 41,590 62,000
1928/29 29,080 39,280 57,930 1968/69 43,170 51,830 66,420 2008/09 29,900 41,160 56,800
1929/30 27,860 40,130 48,210 1969/70 34,480 47,290 62,820 2009/10 32,100 42,010 54,600
1930/31 28,850 37,480 49,130 1970/71 28,180 40,040 54,330 2010/11 22,000 35,480 56,300
1931/32 29,860 40,700 56,380 1971/72 29,380 38,470 55,880 2011/12 24,800 37,070 54,900
1932/33 27,700 40,950 50,950 1972/73 25,760 37,290 50,400 2012/13 27,800 39,660 56,600
1933/34 31,090 40,700 63,670 1973/74 31,530 39,560 52,180 2013/14 30,300 42,080 57,800
1934/35 31,830 43,560 57,310 1974/75 29,960 41,340 63,650 2014/15 26,000 37,860 61,100
1935/36 32,640 41,650 56,770 1975/76 32,410 42,710 59,240 2015/16 29,800 41,360 58,700
1936/37 31,400 42,120 57,900 1976/77 33,390 45,760 57,770 2016/17 26,400 37,260 53,800
1937/38 30,100 40,060 56,790 1977/78 33,150 43,550 62,440 2017/18 28,600 40,130 60,100
1938/39 29,040 41,260 62,380 1978/79 33,570 45,180 52,280 2018/19 28,200 40,770 70,900
1939/40 30,210 42,110 52,780 1979/80 33,340 41,150 59,530 2019/20 35,200 50,250 67,200
1940/41 31,370 40,320 57,110 1980/81 29,680 40,710 52,160 2020/21 28,700 40,830 59,200
1941/42 31,190 42,150 55,200 1981/82 29,270 38,930 49,020

Width and depth[edit]

Location Width (m) Average depth (m) Max depth (m)
Lower Congo
5°08′55.3″S 13°59′20.5″E / 5.148694°S 13.989028°E / -5.148694; 13.989028 1,070 49.3 87.1
Ile Soka

5°08′30.4″S 13°59′27.9″E / 5.141778°S 13.991083°E / -5.141778; 13.991083

1,020 57.4 92.9

5°02′57.3″S 13°59′28.2″E / 5.049250°S 13.991167°E / -5.049250; 13.991167

450 165
Bulu

5°01′49.5″S 14°01′37.2″E / 5.030417°S 14.027000°E / -5.030417; 14.027000

429 62.3 102
5°01′58.6″S 14°01′37.2″E / 5.032944°S 14.027000°E / -5.032944; 14.027000 384 43.2 78.1
5°02′07.8″S 14°01′50.3″E / 5.035500°S 14.030639°E / -5.035500; 14.030639 388 44.1 78.5
Ile Banza

5°2′20.6″S 14°02′09.2″E / 5.039056°S 14.035889°E / -5.039056; 14.035889

540 44.1 79.2
Luozi

4°56′50.7″S 14°09′21.2″E / 4.947417°S 14.155889°E / -4.947417; 14.155889

2,190 11.7 24.2
Muhambi

4°55′38.5″S 14°15′16.5″E / 4.927361°S 14.254583°E / -4.927361; 14.254583

1,010 33.9 78.2
Pioka

4°54′03.3″S 14°24′18.2″E / 4.900917°S 14.405056°E / -4.900917; 14.405056

1,460 75.3 118
Kinshasa–

Brazzaville 4°16′47.3″S 15°18′32.8″E / 4.279806°S 15.309111°E / -4.279806; 15.309111

3,264 9.0 15.7
Middle Congo
Maloukou

4°05′24.4″S 15°30′39.1″E / 4.090111°S 15.510861°E / -4.090111; 15.510861

14.8 36.3
Léchia

3°52′43.4″S 15°55′11.6″E / 3.878722°S 15.919889°E / -3.878722; 15.919889

21.5 50.3
Kounzoulou–Miranda

3°33′18.7″S 16°05′32.2″E / 3.555194°S 16.092278°E / -3.555194; 16.092278

20.9 45.0
Kunzulu

3°28′52.5″S 16°07′18.3″E / 3.481250°S 16.121750°E / -3.481250; 16.121750

1,540 16.8
Kwamouth

3°11′23.7″S 16°11′09.6″E / 3.189917°S 16.186000°E / -3.189917; 16.186000

1,905 12.7
Kasai at mouth

3°10′36.4″S 16°11′41.5″E / 3.176778°S 16.194861°E / -3.176778; 16.194861

606 12.7
Congo at Kasai mouth

3°09′59.7″S 16°10′51.7″E / 3.166583°S 16.181028°E / -3.166583; 16.181028

1,851 12.9–15.3 39.9
Mbali–Mosebwaka

2°48′33.9″S 16°11′40.1″E / 2.809417°S 16.194472°E / -2.809417; 16.194472

8.4 26.7
Bouemba

2°12′22.9″S 16°10′49.0″E / 2.206361°S 16.180278°E / -2.206361; 16.180278

7.0 22.2
Bolobo

2°09′28.5″S 16°12′16.5″E / 2.157917°S 16.204583°E / -2.157917; 16.204583

4,119 7.2
Yumbi

1°52′15.5″S 16°30′43.4″E / 1.870972°S 16.512056°E / -1.870972; 16.512056

7.1 19.7
Bounda

1°37′55.5″S 16°37′59.4″E / 1.632083°S 16.633167°E / -1.632083; 16.633167

8.0 19.7
Mossaka

1°14′22.2″S 16°47′44.5″E / 1.239500°S 16.795694°E / -1.239500; 16.795694

7.6 19.2
Lukolela

1°03′13.5″S 17°08′58.0″E / 1.053750°S 17.149444°E / -1.053750; 17.149444

1,757 8.0–11.7 32.0
Bweta–Manga

0°54′39.2″S 17°23′27.1″E / 0.910889°S 17.390861°E / -0.910889; 17.390861

1,865–5,083 5.0–6.1
Yambe

0°43′38.5″S 17°33′02.9″E / 0.727361°S 17.550806°E / -0.727361; 17.550806

2,468 11.8
Liranga

0°41′00.4″S 17°36′43.7″E / 0.683444°S 17.612139°E / -0.683444; 17.612139

7.9 32.7
Bomenenge–Mikuka

0°25′58.1″S 17°50′13.3″E / 0.432806°S 17.837028°E / -0.432806; 17.837028

7.6 23.7
Mbandaka

0°01′17.4″N 18°13′10.9″E / 0.021500°N 18.219694°E / 0.021500; 18.219694

8.5 31.8
Kisangani

0°30′22.1″N 25°11′03.4″E / 0.506139°N 25.184278°E / 0.506139; 25.184278

1,440 6.0–7.5

[2][3][4]

Tributaries[edit]

Course and drainage basin of the Congo River with countries marked
Course and drainage basin of the Congo River with topography shading

The main river and tributaries are (sorted in order from the mouth heading upstream):

Left tributary Right tributary Length (km) Basin size (km²) Average discharge (m3/s)
Lower Congo

(river mouth to Kinshasa)

M'pozo 170 79
Kwilu 284 6,500 89
Inkisi 392 13,500 291
Djoué 175 6,225 158
Middle Congo

(Kinshasa to the Boyoma Falls)

Nsele 193 4,500 77
Lufimi 250 11,500 199
Kasai 2,153 884,370 11,600
Léfini 14,000 423
Nkeni 8,000 249
Alima 500 21,030 700
Likouala 615 69,800 1,053
Sangha 1,395 191,953 2,471
Irebu 35 7,380 106
Ubangi 2,299 651,918 5,936
Ruki 1,200 173,790 4,500
Ikelemba 345 12,510 222
Lulonga 705 76,950 2,040
Mongala 590 52,200 709
Itimbiri 535 50,490 773
Aruwimi 1,287 116,100 2,200
Lomami 1,798 109,080 2,062
Lindi 600 60,300 1,200
Upper Congo

(Lualaba; upstream from the Boyoma Falls)

Maiko 319
Lilo 192
Ruiki 126
Lilo 93
Lowa 600 49,590 1,625
Ulindi 690 30,240 902
Kasuku 176
Ambe 68
Elila 670 27,360 678
Lueki 59
Lubutu 57
Kunda 41
Luama 320 25,000 221
Lukuga 350 271,580 271
Luvidjo 240 70
Luvua 373 265,260 600
Kalumen-

gongo

67
Lovoi 186
Lufira 590 51,480 502
Lubudi 370 27,500 192

[18][19][20]

Lower Congo (river mouth to Kinshasa) Downstream of Kinshasa, from the river mouth at Banana, there are a few major tributaries.

Middle Congo (Kinshasa to the Boyoma Falls)

Upper Congo (Lualaba; upstream from the Boyoma Falls)

Economic importance[edit]

The town of Mbandaka is a busy port on the banks of the Congo River.
The Congo River at Maluku.

Although the Livingstone Falls prevent access from the sea, nearly the entire Congo above them is readily navigable in sections, especially between Kinshasa and Kisangani. Large river steamers worked the river until quite recently.[when?] The Congo River still is a lifeline in a land with few roads or railways.[21] Railways now bypass the three major falls, and much of the trade of Central Africa passes along the river, including copper, palm oil (as kernels), sugar, coffee, and cotton.[22]

Hydroelectric power[edit]

The Congo River is the most powerful river in Africa. During the rainy season over 50,000 cubic metres (1,800,000 cu ft) of water per second flows into the Atlantic Ocean. Opportunities for the Congo River and its tributaries to generate hydropower are therefore enormous. Scientists have calculated that the entire Congo Basin accounts for 13 percent of global hydropower potential. This would provide sufficient power for all of Sub-Saharan Africa's electricity needs.[23]

Currently, there are about 40 hydropower plants in the Congo Basin. The largest are the Inga dams, about 200 kilometres (120 mi) southwest of Kinshasa. The project was launched in the early 1970s, when the first dam was completed.[24] The plan (as originally conceived) called for the construction of five dams that would have had a total generating capacity of 34,500 megawatts (MW). To date only the Inga I and Inga II dams have been built, generating 1,776 MW.[23]

In February 2005, South Africa's state-owned power company, Eskom, announced a proposal to expand generation through improvements and the construction of a new hydroelectric dam. The project would bring the maximum output of the facility to 40,000 megawatts (MW).[25] It is feared that these new hydroelectric dams could lead to the extinction of many of the fish species that are native to the river.[26]

Natural history[edit]

The beginning of the Livingstone Falls (Lower Congo Rapids) near Kinshasa

The current course of the Congo River formed between 1.5 and 2 million years BP, during the Pleistocene.[27][28] It is likely that during this period many upper tributaries of the Congo were captured from adjacent river basins, including the Uele and upper Ubangi from the Chari system[29] and the Chambeshi River[30] alongside a number of upper Kasai River tributaries from the Zambezi system.[31]

The Congo's formation may have led to the allopatric speciation of the bonobo and the common chimpanzee from their most recent common ancestor.[32] The bonobo is endemic to the humid forests in the region, as are other iconic species like the Allen's swamp monkey, dryas monkey, aquatic genet, okapi, and Congo peafowl.[33][34]

In terms of aquatic life, the Congo River Basin has a very high species richness and among the highest known densities of endemics.[35] As of 2009, almost 800 fish species have been recorded from the Congo River Basin (not counting Lake Tanganyika, which is connected but ecologically very different),[36] and large sections remain virtually unstudied.[37] For example, the section in Salonga National Park, which is about the size of Belgium, had still not been sampled at all in 2006.[38] New fish species are scientifically described with some regularity from the Congo River Basin, and many undescribed species are known.[39]

The Congo has by far the highest diversity of any African river system; in comparison, the next richest are the Niger, Volta and Nile with about 240, 140 and 130 fish species, respectively.[36][40] Because of the great ecological differences between the regions in the Congo basin —including habitats such as river rapids, deep rivers, swamps, and lakes— it is often divided into multiple ecoregions (instead of treating it as a single ecoregion). Among these ecoregions, the Livingstone Falls cataracts has more than 300 fish species,[41] including approximately 80 endemics[26] while the southwestern part (Kasai River basin) has more than 200 fish species, of which about a quarter are endemic.[42]

The dominant fish families – at least in parts of the river – are Cyprinidae (carp/cyprinids, such as Labeo simpsoni), Mormyridae (elephant fishes), Alestidae (African tetras), Mochokidae (squeaker catfishes), and Cichlidae (cichlids).[43] Among the natives in the river is the huge, highly carnivorous giant tigerfish. Three of the more unusual endemics are the whitish (non-pigmented) and blind Lamprologus lethops, which is believed to live as deep as 160 metres (520 ft) below the surface,[26] Heterochromis multidens, which is more closely related to cichlids of the Americas than other African cichlids,[44] and Caecobarbus geertsii, the only known cavefish in Central Africa.[45] There are also numerous endemic frogs and snails.[43][46] Several hydroelectric dams are planned on the river, and these may lead to the extinction of many of the endemics.[26]

Several species of turtles and the slender-snouted, Nile and dwarf crocodile are native to the Congo River Basin. African manatees inhabit the lower parts of the river.[47]

History[edit]

Pre-colonial history[edit]

Main article: Pre-colonial history of the Democratic Republic of the Congo
See also: Category:Ethnic groups in the Democratic Republic of the Congo
17th-century map of the Congo estuary
In this 1853 map of Africa, the remaining Unexplored Region essentially corresponds to the Congo basin

The entire Congo basin is populated by Bantu peoples, divided into several hundred ethnic groups. Bantu expansion is estimated to have reached the middle Congo by about 500 BC and the upper Congo by the first century AD. Remnants of the aboriginal population displaced by the Bantu migration, Pygmies/Abatwa of the Ubangian phylum, remain in the remote forest areas of the Congo Basin.

The Kingdom of Kongo was formed in the late 14th century from a merging of the kingdoms of Mpemba Kasi and Mbata Kingdom on the left banks of the lower Congo River. Its territorial control along the river remained limited to what corresponds to the modern Kongo Central province. European exploration of the Congo began in 1482 when Portuguese explorer Diogo Cão discovered the river estuary[48] (likely in August 1482), which he marked by a Padrão, or stone pillar (still existing, but only in fragments) erected on Shark Point. Cão sailed up the river for a short distance, establishing contact with the Kingdom of Kongo. The full course of the river remained unknown throughout the early modern period.[b]

The upper Congo basin runs west of the Albertine Rift.[48] Its connection to the Congo was unknown until 1877. The extreme northeast of the Congo basin was reached by the Nilotic expansion at some point between the 15th and 18th centuries, by the ancestors of the Southern Luo speaking Alur people. Francisco de Lacerda followed the Zambezi and reached the uppermost part of the Congo basin (the Kazembe in the upper Luapula basin) in 1796.

The upper Congo River was first reached by the Arab slave trade by the 19th century. Nyangwe was founded as a slavers' outpost around 1860. David Livingstone was the first European to reach Nyangwe in March 1871.[48] Livingstone proposed to prove that the Lualaba connected to the Nile, but on 15 July, he witnessed a massacre of about 400 Africans by Arab slavers in Nyangwe, which experience left him too horrified and shattered to continue his mission to find the sources of the Nile, so he turned back to Lake Tanganyika.[49][50]

Early European colonization[edit]

Main article: Colonization of the Congo Basin
Henry M Stanley with the officers of the Advance Column, Cairo, 1890. From the left: Dr. Thomas Heazle Parke, Robert H. Nelson, Henry M. Stanley, William G. Stairs, and Arthur J. M. Jephson
Congo River Allegory by Thomas Vinçotte.[51]

The Europeans had not reached the central regions of the Congo basin from either the east or west, until Henry Morton Stanley's expedition of 1876–77, supported by the Committee for Studies of the Upper Congo. At the time one of the last open questions of the European exploration of Africa was whether the Lualaba River fed the Nile (Livingstone's theory), the Congo,[52] or even the Niger River. Financed in 1874, Stanley's first trans-Africa exploration started in Zanzibar and reached the Lualaba on October 17, 1876. Overland he reached Nyangwe, the center of a lawless area containing cannibal tribes at which Tippu Tip based his trade in slaves. Stanley managed to hire a force from Tippu Tip to guard him for the next 150 kilometres (90 mi) or so, for 90 days.

The party left Nyangwe overland through the dense Matimba forest. On November 19 they reached the Lualaba again. Since the going through the forest was so heavy, Tippu Tip turned around with his party on December 28, leaving Stanley on his own, with 143 people, including eight children and 16 women. They had 23 canoes. His first encounter with a local tribe was with the cannibal Wenya. In total Stanley reports 32 unfriendly meetings on the river, some violent, even though he attempted to negotiate a peaceful thoroughfare. But the tribes were wary as their only experience of outsiders was with slave traders.

On January 6, 1877, after 640 kilometres (400 mi), they reached Boyoma Falls (called Stanley Falls for some time after), consisting of seven cataracts spanning 100 kilometres (60 mi) which they had to bypass overland. It took them to February 7 to reach the end of the falls. Here Stanley learned that the river was called Ikuta Yacongo,[53] proving to him that he had reached the Congo and that the Lualaba did not feed the Nile.

From this point, the tribes were no longer cannibals[clarification needed] but possessed firearms, apparently as a result of Portuguese influence[citation needed]. Some four weeks and 1,900 kilometres (1,200 mi) later he reached Stanley Pool (now Pool Malebo), the site of the present day cities Kinshasa and Brazzaville. Further downstream were the Livingstone Falls, misnamed as Livingstone had never been on the Congo: a series of 32 falls and rapids with an elevation change of 270 metres (900 ft) over 350 kilometres (220 mi). On 15 March they started the descent of the falls, which took five months and cost numerous lives. From the Isangile Falls, five falls from the foot, they beached the canoes and Lady Alice and left the river, aiming for the Portuguese outpost of Boma via land.

On August 3 they reached the hamlet Nsada. From there Stanley sent four men with letters forward to Boma, asking for food for his starving people. On August 7 relief came, being sent by representatives from the Liverpool trading firm Hatton & Cookson. On August 9 they reached Boma, 1,001 days since leaving Zanzibar on November 12, 1874. The party then consisted of 108 people, including three children born during the trip. Most probably (Stanley's own publications give inconsistent figures), he lost 132 people through disease, hunger, drowning, killing and desertion.[54][55]

Kinshasa was founded as a trading post by Stanley in 1881 and named Léopoldville in honor of Leopold II of Belgium. The Congo Basin was privately claimed by Leopold II as Congo Free State in 1885 where the many Atrocities in the Congo Free State were committed until the region was called the Belgian Congo.

See also[edit]

Notes[edit]

  1. ^ Manikongo was properly the title of the kings of Kongo; their capital was at the site of modern M'banza-Kongo, capital of Angola's northwestern Zaire Province. Ortelius had no knowledge of the orography of Africa and drew fictitious courses for its rivers; his Congo upstream of its estuary turns sharply south, flowing through what would correspond to Angola and Botswana.
  2. ^ The Dieppe maps of the mid-16th century show the Congo only as a minor river while having the Nile run throughout the continent, rising in Southern Africa. The same interpretation is in essence still found in Jan Blaeu's Atlas Maior of 1660. Jacques Bellin's map of the Congo in Histoire Generale Des Voyages by Antoine François Prévost (1754) shows awareness of the river reaching further inland, to the provinces of Sundi and Pango, but has no detailed knowledge of its course.

References[edit]

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  50. ^ Jeal, Tim (1973). Livingstone. New Haven, CT: Yale University Press. pp. 331–335.
  51. ^ Brussels, Monument to Congo pionniers, 50th Jubileum Park.
  52. ^ Jeal 2007, pp. 188–219.
  53. ^ Jeal 2007, p. 199; February 7, 1877.
  54. ^ Jeal 2007, p. 217.
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General sources[edit]

External links[edit]

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