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ZAMBEZI , the See also:fourth in See also:size of the See also:rivers of See also:Africa, and the largest of those flowing eastwards to the See also:Indian Ocean. Its length (taking all curves into See also:consideration) is about 2200 M. The See also:area of its See also:basin, according to Dr Bludau, is 513,500 sq. m., or rather less than See also:half that of the See also:Nile. The See also:main channel is clearly marked from beginning to end. The See also:river takes its rise in I I° 21' 3" S., 24° 22' E. The source lies in See also:British territory in a depression of an undulating See also:country 5000 ft. above the See also:sea, covered with bracken and open See also:forest. The See also:water, like that of all the rivers of the neighbourhood, issues from a See also:black marshy See also:bog, and quickly collects into a well-defined stream. In the first See also:hundred See also:miles of its course the river is known as the Yambeshe—in See also:sound almost identical with its name in its See also:lower course, though intervening sections are known as Liambeshe, Liarabai, &c. Eastward of the source the water-parting between the See also:Congo and Zambezi basins is a well-marked See also:belt of high ground, falling abruptly See also:north and See also:south, and See also:running nearly See also:east and See also:west between 11° and 12° S. This distinctly cuts off the basin of the Luapula (the main See also:branch of the upper Congo) from that of the Zambezi. In the See also:neighbour-See also:hood of the source, however, the water-parting is not so clear, but the two river systems do not connect. The Upper River.—The See also:infant Zambezi, after pursuing a south-See also:westerly course for about :50 m., turns more directly south and, soon after the 12° S. is crossed, is joined by a stream (coming from the north-west) whose source is near a marshy See also:lake called Dilolo, 4600 ft. above sea-level in II° 50' S., 22° 10' E. Lake Dilolo was at one See also:time believed to communicate with the See also:Kasai river, one of the See also:great affluents of the Congo flowing north-west, but this is not the See also:case. Dilolo belongs to the Zambezi See also:system only, sending water to that river after heavy See also:rain. The Zambezi as it flows southward receives on either See also:side numerous small tributaries. A few miles above Kakengi (in 12° 24' S.), the Zambezi, narrow, picturesque and tortuous, suddenly widens from too to 350 yds. Below Kakengi are a number of rapids ending (13° 7' S.) in the Sapuma cataracts. At this point the river flows tumultuously through a rocky fissure. The first of its large tributaries to enter the Zambezi is the Kabompo, a See also:left-See also:hand affluent. It joins the main stream in 14° 26' S. A little lower down (in 14° 18' S.) the Zambezi receives from the west the See also:waters of a much larger stream than the Kabompo, namely, the Lungwebungu. (For details concerning these and the other See also:chief tributaries of the Zambezi_, see below.) The See also:savannah forest, which has hitherto characterized the country, now gives See also:place to a more open See also:bush valley, studded with Borassus palms. Dense vegetation is confined to narrow strips of matted forest which skirt the first few hundred yards of the See also:sources of the Zambezi and its tributaries during the first See also:ioo m. or so. The See also:land, from 5000 ft. at the source, falls gradually to 360o ft. at Kakengi—a distance of 220 m. From this point until the See also:Victoria Falls are reached—5oo m.—fhe level of the Zambezi basin is very See also:uniform, the fall being in this distance 60o ft. only. Twenty miles below the confluence of the Lungwebungu the country becomes See also:flat, and in the See also:rainy seasons is largely covered by floods. Some 50 m. farther down, the Luanginga, which with its tributaries drains a large area to the westward, joins the Zambezi. A few miles higher up on the east the main stream is reinforced by the waters of the Luena. On the same (eastern) side a little below the junction of the Luanginga and the Zambezi stands Lialui, the See also:capital of the See also:Barotse (q.v.). The river, which for some distance has had a slight western as well as See also:southern trend, now turns distinctly south-east. From the east the Zambezi continues to receive numerous small streams, but on the west is without tributaries for 15o m., when the great river formerly misnamed the See also:Chobe, but known to the natives as Kwando or Linyante, joins it (in 17° 47' S.). Before this junction is effected, the Gonye Falls, the See also:work of erosion (16° 40' S.), offer an interruption to See also:navigation, whilst below the falls are numerous rapids. The western See also:bank of the Zambezi, which in this See also:part of its course is very tortuous, is See also:German territory from the most southern of these rapids—Katima Molilo (17° 28' S.) —to the confluence of the Kwando, including the right or See also:northern bank of the lower course of the last-named river; this narrow See also:strip of land projecting from the main portion of German South-West Africa expressly to allow See also:Germany See also:access to the Zambezi. Below the junction of the Kwando and the Zambezi the river bends almost due east. The stream has hitherto flowed, in the main, in a See also:gentle steady current, the See also:depth of water, owing to the breadth of the channel, not being great. But its See also:character is about to See also:change. As it flows eastward towards the border of the great central See also:plateau of Africa it reaches a tremendous chasm in the See also:floor of the See also:earth, and thus the Victoria Falls (q.v.), the largest waterfalls in the See also:world, are formed.
The See also:Middle Zambezi.—The Victoria Falls are reached some 6o m. after the Kwando confluence is passed, and below them the river continues to flow due east for about 120 M. It then cuts its way through perpendicular walls of See also:basalt from 6o to too ft. apart. This See also:dismal See also:canyon, named by See also:Major St See also: Between the two See also:gorges the river is generally unobstructed, but at the western end of the second Kariba navigation is dangerous at low water. Exclusive of the See also:Shire (q.v.) the Loangwa and the Kafukwe (also called Kafue) just mentioned are the two largest left-hand tributaries of the Zambezi. The Kafukwe joins the main river in 15° 57' S. in a quiet deep stream about 200 yds. wide. From this point the northward See also:bend of the Zambezi is checked and the stream continues due east. At the confluence of the Loangwa (15° 37' S.) it enters Portuguese territory, and from this point to the sea both banks of the river belong to that See also:kingdom. At the Kebrabasa Rapids—800 rn. below the Victoria Falls—the Zambezi is sharply deflected to the south, the river at this point breaking through the See also:continental escarpment to reach the sea. The Kebrabasa Rapids, which extend about 45 tn.-the road taking a detour of 7o m.—are absolutely unnavigable, and with them the middle stretch of the Zambezi as definitely ends as does the upper river at the Victoria Falls. The Lower River.—The lower Zambezi—400 m. from Kebrabasa Rapids to the sea—presents no obstacles to navigation See also:save the shallowness of the stream in many places in the dry See also:season. This shallowness arises from the different character of the river basin. Instead of, as in the case of the middle Zambezi, flowing mainly through hilly country with well-defined banks, the river traverses a broad valley and spreads out over a large area. Only at one point, the Lupata Gorge, zoo m. from its mouth, is the river confined between high hills. Here it is scarcely 200 yds. wide. Elsewhere it is from 3 to 5 M. wide, flowing gently in many streams. The river-See also:bed is sandy, the banks are low and See also:reed-fringed. At places, however, and especially in the rainy season, the streams unite into one broad See also:swift-flowing river. About ioo m. from the sea the Zambezi receives the drainage of Lake See also:Nyasa through the river Shire. On approaching the ocean, which it reaches in 18° 50' S. the Zambezi splits up into a number of branches and forms a wide See also:delta. Each of the four See also:principal mouths—Milambe, Kongone, Luabo and Timbwe—is obstructed by a See also:sand-See also:bar. A more northerly branch, called the See also:Chinde mouth, has a minimum depth at low water of 7 ft. at the entrance, and of 12 ft. farther in, and is the branch used for navigation. Vixty miles farther north is a river called the Qua :Qua or QuilimaTle, from the See also:town founded by the Portuguese ,at its mouth. This stream, which is silting up, receives in the rainy season the overflow of the Zambezi. The region drained by the Zambezi may be represented as a vast broken-edged plateau 3000 or 4000 ft. high, composed in the remote interior of metamorphic beds and fringed with the igneous rocks of the Victoria Falls. At Shupanga, on the lower Zambezi, thin strata of See also:grey and yellow sandstones, with an occasional See also:band of See also:limestone, See also:crop out on the bed of the river in the dry season, and these persist beyond Tete, where they are associated with extensive seams of See also:coal. Coal is also found in the See also:district just below the Victoria Falls. See also:Gold-bearing rocks occur in several places. Four Thousand Miles of Navigable Water.—As a See also:highway into the interior of the See also:continent the Zambezi, like all other large See also:African rivers, in greater or less degree, suffers on See also:account of the bar at its mouth, the shallowness of its stream, and the rapids and cataracts which interrupt its course. Nevertheless its importance to See also:commerce is great, as the following recapitulation of its navigable stretches will show. (t) From the sea to the Kebrabasa Rapids, 400 M. (2) From Chikoa (above Kebrabasa) to within 140 M. of the Victoria Falls, 700 M. (3) From the rapids above the Victoria Falls to the Katima Molilo Rapids, too m. (4) Above the Gonye Falls to the Supuma See also:cataract, 300 M. (5) Above the Supuma cataract, 12o M. Thus for 162o m. of its course the Zambezi is navigable for steamers with a See also:draught of from 18 to 28 in. Were the obstruction caused by the Kebrabasa Rapids removed, there would be a clear passage from the sea almost to the See also:foot of the cataracts below the Victoria Falls. The difficulty at Kebrabasa might be removed either by the cutting of a side channel or the See also:building of a See also:dam to convert the gorge into a lake, to be connected with the river below by a See also:lock and See also:weir. Several of the Zambezi affluents are also navigable for many miles. The Lungwebungu, which enters the upper river, is navigable for a long distance, thus supplying communication with the extreme north-west corner of the Zambezi basin. Parts at least of the Luena, Kafukwe, Loangwa and the Kwando tributaries are also capable of being navigated. The possibility of connecting the
Kwando with the navigable waters of the Okavango, at the point where the overflow mentioned below takes place, has likewise been suggested. The Shire is also navigable for a considerable distance. The sum of such navigable reaches within the Zambezi basin as exceed See also:loo m. is nearly 4000 M.
Tributaries.—The tributaries of the Zambezi are very numerous. The course of the more important streams is as follows: The Kabompo, which flows in from the east in about 14° 8' S., rises not far from II° 34' S., 25° 17' E. in the high land which forms the eastern See also:watershed between the Zambezi and Congo systems. In 134° S. it receives on the right bank a tributary, the Lunga, said to be more important than the upper Kabompo itself, and rising somewhat farther north. The Lungwebungu, which enters the Zambezi from the west in 14° 35' S., is a strong, deep stream 200 yds. wide in its upper course, flowing in a valley bordered by undulations of See also: This surplus water, received after most of the flood water of the Kwando has passed, raises the level of the lake and holds up the waters of the Kwando for some miles above it. Of the streams which enter the upper Zambezi from the east, the largest, after the Kabompo, is the Luena, which rises in 16° S., 26° E., and flows first north-west, afterwards west-south-west, joining the main river a little north of 15° S. Others are the Njoko joining in 17° 8' S., the Machili, which enters in about 25° E., the Lambi, 16° 45' S., and the Umgwezi, 17° 37' S. The largest tributary of the middle Zambezi—the Kafukwe—rises in about 11° 35' at an See also:elevation of 4400 ft. in thick forest country. The main head-stream, which flows first south-east, afterwards south-west, is joined in 14° 35' S. by the Lunga or Luanga, an important right-bank tributary, the See also:united stream then flowing first south, afterwards due east. The lower Kafukwe is a large navigable river until about 40 M. from its mouth, but it then descends from the plateau by a See also:series of falls and cataracts, the drop being over woo ft. in 15 m., one very high fall occurring in a stupendous chasm. The next great tributary to the east is the Loangwa (also called Luangwa) which in its upper course runs parallel to the western shores of Lake Nyasa, having its source not far from the north-west corner of the lake. The main stream flows in a generally level valley, bounded by steep plateau escarpments, and is for the most part shallow and rapid, though fairly wide. In 14° 3o' S., however, it passes through narrow gorges with a See also:speed of 8 or 9 M. an See also:hour. In 15° 5' S. it is joined by the Lunsefwa, which, with its tributary, the Lukosasi, drains a large extent of the western plateau, its basin being separated by the Mchinga mountains from that of the Loangwa. The Loangwa joins the Zambezi a little above the town of Zumbo. For some distance its lower course forms the frontier between Portuguese and British territory. From the south the middle Zambezi receives various rivers which water northern See also:Matabele and See also:Mashona lands—namely, the Shangani, Sanyati, and Hanyani, besides See also:minor streams. The Mazoe, which also rises in Mashonaland, joins the Zambezi below the Kebrabasa Rapids.
Exploration of the River.—The Zambezi region was known to the See also:medieval geographers as the See also:empire of See also:Monomotapa and the course of the river, as well as the position of Lakes Ngami and Nyasa, was filled in with a See also:rude approximation to accuracy in the earlier maps. These were probably constructed from Arab See also:information. The first See also:European to visit the upper Zambezi was See also:David Livingstone in his exploration from See also:Bechuanaland between 1851 and 1853. Two or three years later he descended the Zambezi to its mouth and in the course of this See also:journey discovered the Victoria Falls. During 1858–6o, accompanied by Dr (afterwards See also:Sir) See also: St Hill Gibbons and his assistants, during two expeditions, in 1895–q6 and 1898–1900, ably continued the work of exploration begun by Livingstonein the upper basin and central course of the river. Of non-British travellers Major Serpa See also:Pinto examined some of the western tributaries of the river and made measurements of the Victoria Falls (1878). Steamers had been used on the lower river—the "Ma-See also:Robert" and the "See also:Pioneer "--by the Livingstone expedition of 1858–61, but the utilization of the Zambezi as a commercial highway was inconsiderable until after the discovery of the Chinde mouth. The first steamer placed on the river above the Kebrabasa Rapids was the "See also:Constance" launched by the Gibbons expedition at Chikoa in See also:September 1898. She steamed to beyond the Guay confluence, and being ultimately sold to a commercial See also:company, was used to carry goods on the middle Zambezi. The first steamer placed on the river above the Victoria Falls was the " Livingstone," launched in See also:August 1902.
See David and See also: (See also: (1908); F. Coillard, On the See also:Threshold of Central Africa (See also:London, 1897), and A. St H. Gibbons. Africa from South to North through Marotseland (2 vols., London, 1904), which gives the results of a detailed examination of the upper Zambezi valley (with See also:map). The last-named author has kindly revised the account given above. (F. R. Additional information and CommentsThere are no comments yet for this article.
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