Riserva naturale Tevere-Farfa, Regional nature reserve in the Metropolitan City of Rome and the Province of Rieti, Italy.

Riserva naturale Tevere-Farfa is a protected area at the confluence of the Tiber and Farfa rivers with wetlands, forests, and riverine landscapes. These interconnected habitats provide space for diverse plants and animals to thrive.

The reserve came into being after a hydroelectric dam was built between 1953 and 1955, which created a large lake and changed the local ecosystem. This transformation eventually led to recognition of the site's value for nature conservation.

The River Museum in Nazzano displays exhibits about water ecosystems through multimedia installations that show how humans and nature relate to each other. Visitors can learn here about the local importance of rivers and their role in daily life.

You can walk marked trails with observation points or join boat tours to see the nature from the water. A visit works best on foot or with a guide to explore the different habitats.

The wetland called Lago di Nazzano, also known as La Meanella, covers about 265 hectares and was added to the Ramsar list in 1977 as a habitat for waterfowl. The lake itself formed only after the Enel dam raised the Tiber between 1953 and 1955, flooding farmland upstream.