A low island between river and ocean — geography as memory.
Banjul stands on St. Mary's Island — Banjul Island — where the Gambia River meets the Atlantic, covering about 12 square kilometres. Colonial planners left the town no room to grow, which shaped both its dense grid and, generations later, its population decline to the mainland.
Banjul's average elevation is about two metres, and studies cite a mean of only around 80 centimetres above sea level for much of the city — making it one of the world's most flood-exposed capitals. Experts have warned that a one-metre rise in sea level could submerge the two-century-old city.
In July and August 2022 The Gambia recorded its heaviest flooding in decades: over 50,000 people affected and more than 7,000 displaced nationally, by UN assessment figures. Flooding has marked Banjul South's story since the 1800s — Half Die flooded repeatedly throughout the colonial period — and it shapes family decisions about staying or leaving today.
The Tanbi Wetland Complex, roughly 6,000 hectares of mangrove-lined creeks and tidal flats wrapping Banjul's west and south, was designated a Ramsar Wetland of International Importance in 1996 and later a National Park. Its bolongs, mudflats, and oyster banks are part of the daily geography of Banjul South livelihoods.
OpenStreetMap holds Banjul's streets, market, ferry, and mosques — but the historic quarter names Soldier Town, Jollof Town, and Portuguese Town return no mapped places (checked via Nominatim, July 2026). The quarters live in speech and memory, not in the map. Mapping them compound by compound, from residents' own accounts, is new knowledge this archive can create.
