Itauba Reservoir
General data
- Name: Itauba Reservoir
- Water system: Lagoa dos Patos
- Water type: Artificial lake
- Progression: Jacui River -> Guaiba River -> Lagoa dos Patos -> Rio Grande Channel -> Atlantic Ocean -> Planet Earth
- Climates: Tropical
- Continents: South America
- Countries: Brazil
The Itaúba Reservoir is a reservoir and hydroelectric power plant located in Restinga Sêca, Brazil, known for its surrounding landscape and boat rides for day trips. It is part of a larger system of linked reservoirs and is being studied for the occurrence of the invasive alga Ceratium furcoides. The Itaúba Reservoir is part of a cascading system of reservoirs, meaning its water level and flow are linked to other reservoirs in the system.