Grassrivers on the GTA 6 map
Grassrivers is the big wetland region in the south of Leonida, stretching west from the edge of Vice City.
Where it is
On our map Grassrivers covers most of the southern interior, between Vice City on the east coast and the Gulf side of the peninsula. North of it the land turns to farmland around Lake Leonida and Ambrosia; to the south it breaks up towards the Keys.
What's there
Rockstar has shown airboats skimming across open marsh, slow channels, swamp roads and alligators. It is Leonida's wild south: few roads, lots of water, and wildlife that can be dangerous.
It looks like the place for hunting and fishing, and for anything the characters would rather do far away from witnesses.
Confirmed or estimated?
Rockstar has officially shown this place, so its existence and name are confirmed. The pin location on our fan-made map is our best reading of the footage, and we'll move it once the game is out on November 19.
Nearby on the map
- Grassrivers channels: south-east of here
- Vice City: east of here
- Downtown Vice City: north-east of here
- Keys Overseas Bridge: south of here
Real-life inspiration
Grassrivers is modelled on the Everglades. For the full real-world comparison, read Grassrivers vs the real Everglades on our sister site LeonidaMap.us.
Questions
How do you get around Grassrivers?
Airboats appear in Rockstar's footage of the region, alongside a few swamp roads.
Is Grassrivers next to Vice City?
Yes. On our map the wetlands begin just west of the city, as the Everglades do beside Miami.
Updated September 28, 2026.