Poses - Le Lagon

France Lake 1 - Excellent

Léry-Poses is a regional leisure and water sports base with two bathing zones: Lagon Beach and Capoulade Beach. The water body is generally of good quality according to directive standards, though a pollution episode in 2008 temporarily downgraded the classification. The study identifies multiple potential pollution sources including agricultural activities, recreational use, equestrian centers, golf courses, and ultralight aircraft operations.

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Water

A quarry lake (gravière) with two bathing zones. The lake receives water from alluvial and chalk aquifers, runoff from the watershed, and occasional overflow from the Seine and Eure rivers. Bathymetry and water circulation patterns are documented.

Location

Léry and Val de Reuil communes in Haute-Normandie, France. The site is situated between the Seine and Eure rivers.

Facilities

Equipment and facilities present at the bathing zones, though specific amenities are referenced in section 3.3 of the document.

Season

Monitoring applies through 2013 under directive 2006. Previous monitoring used directive 1976 standards.

Water Quality

Water quality classified as 'good' according to directive 1976 standards for both Lagon and Capoulade beaches. A pollution episode in 2008 resulted in temporary downgrade to 'momentarily polluted' classification. Analysis conducted under both directive 1976 and directive 2006 frameworks.

Risks

Identified pollution sources include agricultural pollution, fecal contamination from humans and animals, bacterial germs and parasites, wastewater system malfunctions, hydrocarbon and pesticide pollution from road and rail runoff, motor vehicle fuel runoff, and internal lake pollution. Potential algal proliferation identified as a concern.