Pateira de Fermentelos

This protected wetland spans approximately 529 hectares and represents the largest natural lake in the Iberian Peninsula, featuring diverse aquatic ecosystems with abundant bird species and native fish populations.

The lake formed in the late 15th century when the Cértima and Águeda rivers overflowed, creating a permanent water body that was once a private hunting reserve of King Manuel I.

Local communities maintain the traditional practice of harvesting moliço, aquatic vegetation collected from the lake and used as natural fertilizer in regional agriculture for centuries.

Visitors can access the reserve via well-marked roads from Águeda, with wooden walkways providing close water access for birdwatching, fishing, and photography activities throughout the year.

The lake transforms seasonally with water hyacinths creating floating purple carpets in summer, while serving as a crucial stopover point for migratory birds crossing the Iberian Peninsula.

Location: Fermentelos

Operator: Município de Águeda

Address: Pateira de Fermentelos, Portugal

Website: https://cm-agueda.pt

GPS coordinates: 40.57061,-8.53021

Latest update: July 3, 2025 13:17