#abandoned riverbed
- Oxbow lake — A regional or archaic form used to describe an old riverbed abandoned by a watercourse, an oxbow lake turned into a temporary pond, or a natural floodable excavation formed by the structural diversion of a main river. In a broader hydrological sense, archenea represents a lacustrine micro-ecosystem specific to floodplains, characterized by organic silt accumulations and dense hydrophilic vegetation.