---
title: "Rivers in Ghana: Major Rivers, Basins and Lengths"
url: https://33travels.com/rivers-in-ghana/
author: "Tomas Herrera"
published: 2026-11-05
updated: 2026-11-05
place: "Ghana"
---

# Rivers in Ghana: Major Rivers, Basins and Lengths

Ghana’s rivers fall into three drainage systems. The Volta system covers about 70% of the country, the South-Western system about 22%, and the Coastal system the remaining 8%. Nearly every river you’ll hear about belongs to one of those three.

## TLDR

- **Longest river in Ghana:** the Volta, at about 1,500 km counting its headstreams. Its two big branches, the Black Volta (1,352 km) and White Volta (885 km), both rise in Burkina Faso.
- **Volta system (about 70%):** Black Volta, White Volta, Oti and Afram, all draining into Lake Volta, then the Volta River to the sea at Ada Foah.
- **South-Western system (about 22%):** Bia, Tano, Ankobra and Pra, plus the Pra’s tributaries, the Ofin and Birim. These run south through the forest and gold belt.
- **Coastal system (about 8%):** short rivers such as the Densu and Ayensu, which drain the area around Accra and the central coast.
- **Biggest problem:** illegal gold mining (galamsey) has turned the Pra, Ankobra and Birim muddy and hard to treat for drinking water.

## Contents

- [The three drainage systems](#the-three-drainage-systems)
- [Rivers in Ghana compared](#rivers-in-ghana-compared)
- [The Volta system](#the-volta-system)
- [The South-Western rivers](#the-south-western-rivers)
- [The Coastal rivers](#the-coastal-rivers)
- [Lake Volta and the Akosombo Dam](#lake-volta-and-the-akosombo-dam)
- [Galamsey and river pollution](#galamsey-and-river-pollution)
- [Sacred rivers](#sacred-rivers)
- [Where to see Ghana’s rivers](#where-to-see-ghanas-rivers)

## The three drainage systems

Ghana is small, but its rivers do not all go the same way. The north drains south through the Volta. The forest belt in the southwest drains straight to the Gulf of Guinea through several mid-sized rivers. A strip of coast around Accra drains through short rivers that don’t reach very far inland.

That split explains most of the geography. The Volta system gets its water from the savannas of Burkina Faso and northern Ghana, so it carries big volumes but is fed by seasonal rain. The South-Western rivers start in wetter forest country and run year-round. The Coastal rivers are small, and some of them supply entire cities.

## Rivers in Ghana compared

Lengths are approximate, and published figures differ because sources measure from different headstreams. For the White Volta, one source gives both 885 km and 855 km in the same article. This post uses 885 km, the figure that appears across several references, and treats 855 as a typo.

| River | Length (km) | System | Source | Mouth | Shared with |
| --- | --- | --- | --- | --- | --- |
| Volta | ~1,500 | Volta | Confluence of the Black and White Volta | Gulf of Guinea at Ada Foah | None |
| Black Volta | 1,352 | Volta | Burkina Faso | Lake Volta | Burkina Faso, Côte d’Ivoire |
| White Volta | 885 | Volta | Burkina Faso, north of Ouagadougou | Lake Volta | Burkina Faso |
| Oti | ~520 | Volta | Burkina Faso and Benin (as the Pendjari) | Lake Volta | Togo, Benin, Burkina Faso |
| Afram | ~100 | Volta | Near Mampong | Lake Volta | None |
| Tano | ~400 | South-Western | Near Techiman | Aby Lagoon, Côte d’Ivoire | Côte d’Ivoire |
| Bia | ~300 | South-Western | Western Ghana | Côte d’Ivoire | Côte d’Ivoire |
| Pra | ~240 | South-Western | Kwahu Plateau | Gulf of Guinea at Shama | None |
| Ankobra | ~190 | South-Western | Northeast of Sefwi Wiawso | Gulf of Guinea near Axim | None |
| Densu | ~116 | Coastal | Atewa Range | Gulf of Guinea at the Densu Delta | None |

The Oti is the messy entry. Its length depends on whether you count the Pendjari headstream in Benin, so expect other sources to give a bigger number.

## The Volta system

The Volta is the longest river in Ghana and the reason about 70% of the country drains one way. Its basin covers roughly 407,000 km², most of it outside Ghana. The Portuguese name means “turn” or “twist”, which suits a river that loops around as much as this one.

**Black Volta.** At 1,352 km, it is the longest branch. It rises in Burkina Faso and then forms part of the border with Ghana, and later with Côte d’Ivoire. Towns on its banks include Lawra and Bamboi, where ferries still run. Further downstream, the Bui Dam, finished in 2013, is Ghana’s second-largest hydroelectric plant.

**White Volta.** Shorter at about 885 km, it flows south through Burkina Faso (where it is called the Nakambé) and then across northern Ghana through Daboya and Yapei. It carries more sediment than its darker twin during the rains.

**Oti.** The Oti enters Ghana from Togo, one of [Ghana’s three land neighbours](https://33travels.com/countries-that-border-ghana/), on the eastern side and drains into Lake Volta. It’s the odd one out in the system because it draws on Benin and Togo as much as on Ghana.

**Afram.** Small at roughly 100 km, but it matters. It drains the plains east of Kumasi into Lake Volta and gives the Afram Plains their name.

The Black and White Volta, along with the Oti and Afram, now feed Lake Volta. Below the Akosombo Dam, the Volta River itself runs roughly 100 km to the sea at Ada Foah, where it meets the Gulf of Guinea.

![Aerial drone view of Adomi Bridge spanning the Volta River in Ghana, showcasing local landmarks.](https://33travels.com/wp-content/uploads/2026/11/volta-river.jpeg)

## The South-Western rivers

These rivers matter for water supply and for gold. They rise inland, cut south through the forest zone and reach the Atlantic in a short run.

**Tano.** About 400 km, rising near Techiman and flowing south into Côte d’Ivoire’s Aby Lagoon. Most of its course is in Ghana, and the forest around its lower reaches is wildlife habitat, including the endangered Miss Waldron’s red colobus.

**Bia.** The Bia marks part of the western border with Côte d’Ivoire before leaving Ghana. The [rivers of Côte d’Ivoire](https://33travels.com/rivers-in-ivory-coast/) on the other side of that border are listed separately.

**Pra.** Roughly 240 km, from the Kwahu Plateau to the sea at Shama. It is the main river of the south-central forest zone, and its tributaries are the **Ofin** and the **Birim**. The Birim flows through diamond country around Akwatia, and the Ofin drains the Ashanti Region.

**Ankobra.** Around 190 km, rising in the northwest of the forest belt and reaching the coast near Axim. It runs through Ghana’s most heavily mined gold region.

## The Coastal rivers

These are short, and several carry more weight than their length suggests.

**Densu.** It rises in the Atewa Range and flows about 116 km to the coast west of Accra. The Weija reservoir on the Densu supplies water to a large part of Accra. Its mouth is the [Densu Delta Ramsar site](https://rsis.ramsar.org/ris/564), a wetland of lagoon, salt pans and dunes that is important for resident and migratory waterbirds.

**Ayensu.** A smaller coastal river west of Accra, which reaches the sea on the central coast.

## Lake Volta and the Akosombo Dam

The Akosombo Dam closed the Volta in 1965 and created Lake Volta. The reservoir covers about 8,500 km², roughly 3.6% of Ghana’s land area, and stretches around 400 km north to Yapei. It is often described as the largest man-made reservoir in the world by surface area.

![Industrial hydroelectric power plant located near river and stony coast against green mountain range covered with mist on summer day](https://33travels.com/wp-content/uploads/2026/11/hydroelectric-dam.jpeg)

The lake does several jobs at once. The dam generates electricity for Ghana and neighboring countries. The lake carries cargo and passengers by water between the south and the north. Fishing communities line its shores. And it flooded a large area of river valley, forcing tens of thousands of people to resettle when it filled.

The 2023 spillage showed the other side. When heavy rain pushed water levels up, the Volta River Authority opened the spillways in September 2023. [UNICEF](https://www.unicef.org/ghana/blog/akosombo-dam-spillage) reported the downstream flooding that followed in the Lower Volta communities. The release ended at the end of October. It is the clearest recent case of a river decision in Ghana reaching people far from the dam.

## Galamsey and river pollution

Galamsey, the local word for illegal small-scale gold mining, is the main threat to the South-Western rivers. Miners dredge riverbeds and wash soil in the water. The result is a river the color of milky tea or worse.

The Pra, Ankobra and Birim have taken the worst of it. The state water company has repeatedly warned that treatment plants along these rivers struggle or have to shut down when turbidity spikes. Safe drinking-water limits are single digits on the turbidity scale, and readings on the Pra have run into the thousands.

If you plan to travel in the mining belt, don’t count on the river water being what it looks like on a map. Bottled or filtered water is the safe default in the Western and Ashanti regions.

## Sacred rivers

Many Ghanaian rivers are more than water. The Tano is the clearest example. Among the Akan, the river is tied to Taakora (or Tano), a deity said to live at its source near Techiman. The sacred grove there is part of that belief.

River taboos are common across the south. Some rivers have a rest day when fishing or farming at the bank is forbidden, which has long had a conservation effect. If you visit, ask locally before you swim, fish or take photographs, and follow the guidance.

## Where to see Ghana’s rivers

- **Akosombo and Lake Volta.** Boat cruises run on the lake near the dam, and you can see the dam and its spillway from the road.
- **Ada Foah.** The Volta reaches the sea here. Boat trips cross the estuary and connect to the sandbars and beaches.
- **Wechiau Hippo Sanctuary.** On the Black Volta in the northwest, with canoe trips to see hippos in the wild.
- **Bui National Park.** Along the Black Volta near the Bui Gorge, with a dam and river scenery.
- **Densu Delta.** A birding stop near Accra, best in the dry season for migratory birds.
- **Tano Sacred Grove.** Near Techiman, for the source of the river and its religious significance. Visit with a local guide.

The Pra, Ankobra and Birim are better seen than touched. Their banks have scenery, but the water is rarely something to swim in.