The Bangweulu Wetlands are a vast lake, swamp and floodplain system on the flat plateau of northern Zambia, with a small fringe reaching into the Democratic Republic of the Congo. Fed mainly by the Chambeshi River and drained only by the Luapula, they sit in the upper Congo basin at about 1,140 m above sea level and cover roughly 15,000 to 16,000 km² at peak flood, of which Lake Bangweulu's open water is about 3,000 km². The landscape is a mosaic of open lake, floating papyrus swamp, seasonally flooded grassland and waterlogged dambos ringed by miombo woodland. The system is a Wetland of International Importance under the Ramsar Convention (listed as the Bangweulu Swamps), an Important Bird Area, and is covered in part by seven protected areas, the largest of which, the 6,470 km² Bangweulu Game Management Area, has been run by African Parks with local communities since 2008.
The name is usually translated as "where the water meets the sky", and the best way to understand the place is to follow the water itself: in from the northeast along the Chambeshi, through the eastern swamps and across the lake, past the sandy western shore at Samfya, over the southern floodplains, and out again through the Luapula towards Lake Mweru.
The Chambeshi: 480 km from the Tanganyika highlands to the swamps
The journey starts far from the lake. The Chambeshi rises as a stream in the hills of northeastern Zambia near Lake Tanganyika, at about 1,760 m, and flows southwest for about 480 km before it reaches the Bangweulu system. Because it is the most remote headstream of the whole Congo system by length, the Chambeshi is conventionally treated as the source of the Congo River, even though the Lualaba carries more water.
Long before it reaches the lake, the river behaves like a wetland. For more than 100 km east of Kasama it splits into a maze of channels about 2 km wide inside a floodplain up to 25 km across. Where the Kasama–Mpika road and the TAZARA railway bridge it, the permanent channel is around 100 m wide and swells to about 400 m in flood. By May, at the end of the rains, the Chambeshi delivers the flood pulse that recharges the swamps and spreads over the grasslands to the southeast. About seventeen rivers feed Bangweulu in all, but none comes close to the Chambeshi in volume.
The last stretch before the swamps passes through the Chambeshi Game Management Area, 620 km² of permanent swamp and grassy floodplain in Chilubi District, which lies between the larger Bangweulu GMA and Isangano National Park. Isangano, 820 to 840 km² of miombo and dambo depending on the source, with the Lubansenshi River running through its centre, is where David Livingstone crossed the southern wetlands in April 1873 at the height of the flood, writing the first account of them.
Into the eastern papyrus at Lake Wumba and Nsalushi Island
There is no single channel where the Chambeshi meets the swamps. It enters through a broad estuary, joined by the Luansenshi, and opens into Lake Wumba in the northeast. From here water moves slowly through the permanent swamps, a belt normally no smaller than 9,000 km² and roughly 120 km by 75 km in its main part, much larger than the open lake itself.
These swamps are dominated by floating papyrus and Vossia grass, up to about 2 m deep. Rafts of vegetation are buoyant enough for fishing families to set up temporary camps on them. Channels are created and kept open by river flow, by hippos and by people, who cut long straight passages between island villages and travel them in narrow dugout canoes. Islands such as Nsalushi, Panyo, Chisale, Mutwamina and Munyanga in the east, and Lake Chaya at the mouth of the Lulingila River, are reached this way.
The swamps also act as a brake on floods downstream. Releasing water slowly through lagoons and channels, they keep the Luapula valley from flooding excessively in the rainy season. The seasonal rise between low and high water is only 1–2 m, but on such flat ground the edge of the flood advances and retreats by up to 45 km.
Chilubi Island and the three arms of Lake Bangweulu
Heading west out of the swamps, the canoe routes reach Chilubi, the largest island in the system. It has a zig-zag outline of about five segments, each about 12 km long and 1.5 to 3 km wide, with about 100 km of shoreline; its northwestern tip pokes into open water while its tail lies in the swamps. Its highest ground reaches about 1,179 m. Villages line the shore, cassava grows in the sandy interior, and Chilubi town is the only one of Zambia's 116 district headquarters on an island with no road connection. Ferries run to Samfya, 45 km across the lake, and to Nsombo and Chaba in the north.
The lake beyond is shallow, about 4 m deep on average and 10 m at most. Parallel sandy ridges running southwest to northeast split it into three arms. Lake Chifunabuli, behind the Lifunge Peninsula, is 50 km long but only 5 km wide, with an entrance gap just 250 m across. Mbabala Island, where Livingstone was taken by canoe in 1868 as the first European to see the lake, divides off Lake Walilupe, 30 km by 13 km. The broad middle section is simply called Bangweulu. Further south, Lake Kampolombo (30 km by 5 km) connects to Walilupe through a 7 km channel, and the 32 km Kapata Peninsula separates it from the swamps.
The lake's fish feed the region. In 1989 the annual catch was estimated at 11,900 tonnes, landed by 10,300 people using 5,305 dugouts and only 54 outboard motors; by 2000 it was 13,500 tonnes. Fishing is closed from December to February, but enforcement is thin, and in 2022 Zambia's fisheries minister told the National Assembly that stocks in Lake Bangweulu were seriously depleted.
Samfya and the lake's only firm western shore
Almost every shore of Bangweulu is marsh, except the southwest. There, on the longest well-defined stretch of beach, lies Samfya, the largest town, headquarters of Samfya District (which covers about three-quarters of the lake and swamps) and the main base for boats, trade and tourism. White sand runs along the shore, crocodiles live in the water, and the Kwanga festival of the Ngumbo people is held in the town each October.
Samfya is also where the road meets the water. A tarred road opened in 1983 links Luapula Province to the Great North Road at Serenje, crossing the Luapula on the Luapula Bridge, the longest bridge in Zambia. Gravel roads continue to Twingi on the Kapata Peninsula, to Kapalala and to Lubwe, whose Catholic mission and hospital stand on Lake Chifunabuli. The people around the lake, among them the Bisa of Chilubi, the Unga of Lunga, the Kabende of Samfya and the Ngumbo of Lubwe, all speak Chibemba.
South across the Lunga Bank to the black lechwe floodplains
South of Chilubi the swamps become the Lunga Bank, an area that is very shallow in the flood season and can turn fairly dry by the end of the dry season. Kasoma village, seat of the new Lunga District, sits on its southeastern edge. Beyond it, about 3,000 km² of grassy floodplain, the Bangweulu Flats, spread mainly south of the swamps.
This is the home of the black lechwe, a subspecies whose only significant remaining population lives in the Bangweulu wetlands. About 36,600 were reported in 2020, and their main dry-season grazing grounds are the estuaries of the Lumbatwa, Lukulu and Lulimala rivers on the southeastern side. Grasses sort themselves by flood depth here: Vossia in the wettest ground, Oryza in the middle band and Hyparrhenia at the dry upper edge. Termite mounds, at about three large mounds per hectare and some up to 30 m wide and 6 m high, stay above the flood and carry trees, birds of prey and resting lechwe.
The floodplains and swamps hold more than 400 bird species. The most sought after is the shoebill, a vulnerable species threatened by burning, fishing pressure and the wildlife trade; a rearing and rehabilitation facility for shoebill chicks opened in 2022. Wattled cranes, saddle-billed storks and great white pelicans are also recorded. In 2016 African Parks and Fondation Segré moved 600 animals, including hartebeest, impala and puku, into the wetlands, and cheetahs were reintroduced in 2020, almost a century after they disappeared.
Chitambo, Kasanka and the southern edge of the flood
Just beyond the southern edge of the floodplain, about 100 km south-east of the lake, stands the Livingstone Memorial. David Livingstone died there, in Chief Chitambo's village at Chipundu, on 1 May 1873, after his last expedition foundered among the shifting channels while he searched for the rivers flowing in and out of the lake. His heart was buried under a mpundu tree; the present obelisk, about 6 m high, was built in 1902.
Just south lies Kasanka National Park, 390 km² inside the 3,860 km² Kafinda GMA, with about 110 km² of small lakes and wetland. It drains west through the Luwombwa River rather than into the swamps, so it is not hydrologically part of Bangweulu, but its animals and birds move between the two. Millions of straw-coloured fruit bats migrate each year to its mushitu swamp forest.
Between 50,000 and 90,000 people depend on the wetlands, about 50,000 of them inside the Bangweulu GMA, where they live mainly from fishing. A 15-year management agreement signed on 15 October 2014 by the wildlife authority, African Parks and six Community Resource Boards, with chiefs including Senior Chief Kopa and Chief Chitambo, shares decisions with them. Burning for farming, overfishing with mosquito nets and poaching have been the main pressures, met with bee-keeping and fisheries programmes.
Out through the Luapula towards Lake Mweru
The water finally leaves through the Luapula, the system's only outlet. Even here there is no clean channel: the river line drawn on many maps from the lake's southern end fades into vegetation, and the true exit from the swamps is west of Tuta Bridge, around 12°07′S. Below the swamps the Luapula turns in an arc southwest, then northwest and north, forming the border between Zambia and the DR Congo, dropping over Mambilima Falls and running through a 300 km valley to its swampy delta on Lake Mweru. From Mweru the water continues via the Luvua to the Lualaba and the main stem of the Congo River, a reminder that Bangweulu's slow-moving swamps are the first great reservoir of Africa's second-longest river.
Bangweulu's lechwe herds and seasonal floodplains invite comparison with the Kafue Flats further south, and both sit within the wider wetland story told in our guide to Zambia.