In the southern part of its territory, the municipality of Bormes-les-Mimosas occupies the Batailler plain up to its mouth in the Mediterranean Sea. A 6.8 mi (11 km) long river descends from the locality of Rayac at 1,433 ft (437 m) above sea level. It crosses the entire territory of the locality to flow between the ports of Bormes-les-Mimosas and Le Lavandou, further east. Several of its tributaries and other small rivers also irrigate Bormes-les-Mimosas and the Var department.