Albufeira Do Caldeirão

Portugal Lake 1 - Excellent

Caldeirão is a bathing water located in a reservoir of the same name in the municipality of Guarda, supplied by the Caldeirão Stream. The reservoir spans areas of the parishes of Maçainhas, Corujeira, Trinta, Pêro Soares, Mizarela, and Vila Soeiro. The bathing water exhibits variability in its microbiological quality.

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Water

Reservoir (Albufeira do Caldeirão) supplied by the Caldeirão Stream, part of the Mondego River basin.

Location

Municipality of Guarda, Portugal. The monitoring point is located at latitude 40.5767°N and longitude 7.30705°W.

Season

28 June to 31 August 2025.

Water Quality

Water quality classification made in 2024 under Decreto-Lei 135/09. Sampling frequency is every two weeks. No short-term pollution episodes occurred during the 2024 bathing season. Bathing was not advised against or prohibited on any days due to short-term pollution events in 2024.

Risks

Potential microbiological pollution sources include diffuse sources upstream from agricultural or domestic activities, solid waste from beach activities, flora and fauna, high user numbers, and discharge from an upstream dam. Cyanobacteria, macroalgae, and phytoplankton have high potential for proliferation.