The Khwai River: How the Okavango's Eastern Edge Works
The Okavango’s last river before the dry country
The Khwai River is the Okavango Delta’s eastern edge made visible. Of all the channels the Delta spreads across the Kalahari sand, the Khwai is the most easterly, the direct extension of the main Okavango channel after it has passed through the Nqoga and Maunachira. It runs along the northern boundary of Moremi Game Reserve, past the village of Khwai at North Gate, and in a good year it is the last stretch of Okavango water before the dry country of Savuti and Chobe begins.
That position explains why so much happens here. On one bank is a national reserve with no night driving and no walking; on the other is a community concession where both are allowed. Between them is a permanent river in a region where permanent water is scarce, with riverine forest for leopards, floodplains for red lechwe and elephant, and a mokoro channel at the door. This guide explains where the Khwai’s water comes from, why its level depends as much on local rain as on the Angolan flood, what lives along it, and how to use it on a safari.
Where the Khwai's water comes from
The Okavango does not reach the Khwai in a straight line. Water that enters Botswana at Mohembo runs down the Panhandle, splits into the fan, and the main channel continues south-east as the Nqoga, then the Maunachira, and finally the Khwai. Hydrologists describe this Nqoga-Maunachira-Khwai line as the Delta’s most eastern distributary and the direct extension of the main river. Everything the Khwai carries has already crossed the whole Delta.
The timing follows from that distance. The Okavango’s flood wave peaks at the inlet at Mohembo in April; the Delta reaches its maximum flooded extent in August and September. By the time the pulse arrives in the lower Delta the local rains have long stopped, which is the familiar Okavango paradox: the river rises in the dry season. Our guide to when the Okavango Delta floods follows the whole journey month by month.
Why the Khwai is not only an Okavango river
The Khwai has a second source of water that the Panhandle does not: rain that falls on it directly. A thirty-year analysis of Delta water levels found that at North Gate on the Khwai the maximum flood-season level correlated more strongly with the year’s local rainfall than with the volume of water entering the Delta at Mohembo. In plain terms, a wet summer in northern Botswana raises the Khwai even in a year when Angola sends less, and a dry summer lowers it even when the flood is strong. The same study noted that the Maunachira, the channel feeding the Khwai from upstream, has been silting up along its middle and lower reaches, with some of the flow finding its way to the Khwai across the floodplains north of the channel instead.
For a visitor the practical consequence is simple. The Khwai’s level in any given week is the sum of two things, the Angolan flood arriving late and the local rain arriving early, and nobody can tell you in January exactly what the river will look like in July. What is reliable is the pattern: water rises through the middle of the year, the floodplains on either side fill and then shrink, and from July the surrounding bush dries while the river keeps flowing.
What lives along the river
Because the river is permanent and the country around it is seasonal, the Khwai corridor concentrates wildlife in a way that few places outside the Delta do. The Khwai region covers about 1,800 square kilometres and records around 500 bird species and 100 mammal species, and most of that life is organised around the one line of water.
The riverine forest
Along both banks runs a strip of tall trees, leadwood, ebony and fig among them, that is the Khwai’s signature habitat. It is leopard country: the shade, the cover and the steady supply of impala and lechwe along the water make the riverine forest a stronghold for the cat, and it is the habitat our leopard guide points to first for northern Botswana. The same trees hold the nests of fish eagles and the day roosts of owls, and in the dry season elephants strip the bark of the smaller ones.
The floodplains
Where the river spreads, the grass takes over. These are the shallows that red lechwe are built for, and in the flood months they stand knee-deep, feeding where few predators follow. Elephant herds cross the floodplains to drink and bathe, buffalo graze the margins, and in the dry season the open ground beside the water becomes the stage on which lion and spotted hyena work. The painted dogs that Khwai is known for use the floodplain edges too, hunting impala along the tree line in the early morning and late afternoon.
The water itself
Hippo hold the deeper pools and lagoons year round, and crocodile bask on the banks. The channels and lagoons that the flood opens are also where the mokoro trips run: the Khwai is one of the places in the Delta where a mokoro can be poled from camp, which is why it features in our mokoro safari guide. The birdlife along the water is dense in any month, with saddle-billed storks and wattled cranes on the floodplains, kingfishers and bee-eaters along the banks and the migrants arriving with the rain.
The dry-season concentration
From roughly July to September the pattern reaches its peak. The pans and seasonal pools of the surrounding mopane woodland have dried, the grass is short, and the animals of a wide area have only the river to drink from. Game viewing along the Khwai in those months is not a matter of luck so much as of geography: the water is in one place and so is everything that needs it. It is also the busiest time for camps along the river, and the months when visibility is at its clearest.
The two banks
The rules change at the water. The southern bank is Moremi Game Reserve, where driving is restricted to daylight and to tracks, and walking is not permitted. The northern bank is the Khwai Community Area, run by the Khwai Development Trust on former hunting land, where night drives, guided walks and off-track driving are allowed. A camp on the northern bank can therefore do both: drive into the reserve by day, and work the river after dark on the way home. Our guide to the Khwai Community Area explains how the concession works.
The village, the seasons and how to get there
The village at North Gate
The Khwai River shares its name with the village on its northern bank, a settlement of roughly 400 people, most of them Bugakhwe, one of the San groups who lived as hunter-gatherers in this part of Botswana until the 1960s, when they were encouraged to settle. The village stands just outside Moremi’s North Gate, and its history is bound up with the reserve: the community first settled inside what became Moremi and was moved out by the government when the reserve was established. Today the Khwai Development Trust manages the concession around the village, and tourism fees fund education, infrastructure and local employment.
When to come
Dry season, May to October. The Khwai at its most concentrated. Days are around 25 to 30 degrees Celsius, winter mornings in June, July and August can fall to 10 degrees or below, and the sky is clear. The river is the only water for miles and the game viewing follows from that. Book early for July to September.
Green season, November to March. The rains return as afternoon storms, the floodplains green over, newborn antelope appear and the migrant birds arrive. Days reach 30 to 35 degrees with warm nights around 20 to 25. The animals spread out, the vehicles are fewer, and the light after a storm is the reason photographers come. Because the Khwai responds to local rain, the river itself can be fuller in a wet green season than the calendar would suggest.
April and May. The hinge between the two: rain easing, flood arriving from the west, grass still green, first cool mornings. Short, and underrated.
Getting there
By air, charter flights from Maun land at Khwai Airstrip in around 25 to 30 minutes, with a short game-drive transfer to the camps along the river. By road it is a four-by-four journey of about three to four hours from Maun, depending on the season, through sand and, in the green season, water; self-drivers need off-road experience, and we arrange guided transfers for guests who would rather not drive it. Khwai also connects northwards to Savuti and Chobe, which is why it so often sits in the middle of a northern Botswana route: Delta, river, then dry country.
Staying on the river
O Bona Moremi Safari Lodge stands in the Khwai Concession, about ten minutes from the Moremi gate, which places it in exactly the position this guide describes: the reserve for daytime drives, the concession for night drives and guided walks, and the river for mokoro and for the animals that come to it. Tell us when you would like to travel and we will tell you what the river is doing.
Planning a visit to the Khwai River
Where does the Khwai River come from?
The Khwai is the easternmost channel of the Okavango Delta. Water enters Botswana at Mohembo, crosses the Delta along the main channel through the Nqoga and Maunachira, and arrives at the Khwai last. It also receives rain that falls locally, which is why its level does not simply follow the Angolan flood.
Is the Khwai River in Moremi Game Reserve?
It forms the reserve’s northern boundary. The southern bank is inside Moremi, with daytime game drives on tracks only. The northern bank is the Khwai Community Area, where night drives, walks and off-track driving are permitted. Camps on the northern bank can use both.
When is the Khwai River highest?
The Okavango flood peaks at the Delta’s inlet in April and the Delta is at its fullest in August and September, so the Khwai typically rises through the middle of the year. Local summer rain also raises it. Exact levels vary from year to year, so ask your camp what the river is doing.
What animals can I see along the Khwai River?
Leopard in the riverine forest, African wild dog and lion on the floodplain edges, elephant and buffalo coming to drink, red lechwe in the shallows, hippo and crocodile in the pools, and a dense birdlife that includes saddle-billed storks, fish eagles and wattled cranes. From July to September the animals concentrate on the river.
Can you do a mokoro trip on the Khwai River?
Yes. The Khwai is one of the places in the Delta where mokoro excursions run from camps on the river, in the channels and lagoons that the flood opens. Whether a particular channel is deep enough depends on the water level in that season, so the camp decides day by day.
On the river, on the concession side
O Bona Moremi Safari Lodge stands in the Khwai Concession on the river, about ten minutes from the Moremi gate. Tell us your dates and we will tell you what the river is doing.