| Algibre River | |
| Pushpin Map: | Portugal topographic |
| Pushpin Map Caption: | Confluence of the Algibre River and the Quarteira River |
| Subdivision Type1: | Country |
| Subdivision Name1: | Portugal |
| Subdivision Type3: | Region |
| Subdivision Name3: | Algarve |
| Subdivision Type4: | District |
| Subdivision Name4: | Faro |
| Subdivision Type5: | Municipality |
| Subdivision Name5: | Loulé |
| Length: | 13.5miles, East to West |
| Source1: | Moinhos River |
| Source1 Location: | Querença, Algarve |
| Source1 Coordinates: | 37.1916°N -8.0073°W |
| Source1 Elevation: | 200m (700feet) |
| Source2: | Mercês River |
| Source2 Location: | Querença |
| Source2 Coordinates: | 37.1916°N -8.0073°W |
| Source2 Elevation: | 200m (700feet) |
| Source3: | Quarteira River |
| Source3 Elevation: | 50m (160feet) |
| Mouth: | Into the Atlantic Ocean at Quarteira |
The Algibre River (pronounced as /pt/) is a small river in the Portuguese region of the Algarve. The Algibre River is formed by the confluence of the Mercês (Ribeira das Mercês) and Benémola (Ribeira da Benémola) rivers close to the village of Querença in a small fertile valley. The area is characterized by many derelict sluices and dams that date back to the period of Arab occupation, during which the whole area was irrigated and agriculture was the predominating activity of this land. The river along with the Alte River, another tributary, becomes the River Quarteira after the two rivers conflux. The river runs eastwards for 13.5miles from its start at the confluence of.[1]
The Algibre is one of a number of small rivers in the central Algarve that make up the water ecosystem known as the Querença – Silves Aquifer System.[2]