Aggertalsperre Freibad Bruch

Germany Lake 1 - Excellent

Aggertalsperre is a reservoir in North Rhine-Westphalia, Germany, designated as a bathing water since 1980. It is classified as significantly modified and has been rated as excellent for water quality in all four years from 2019 to 2022. The bathing area extends 200 metres along the shore and is managed by Stadtwerke Gummersbach GmbH.

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Water

Reservoir (Talsperre) with an area of 120 hectares. Water exchange time exceeds 30 days. Mean water depth is 4 metres, maximum depth is 10 metres. Mean water temperature is 18.5 °C (range 12.3–24.7 °C). pH range is 6.6–8.5 with mean of 7.6. Conductivity ranges from 161–330 µS/cm with mean of 171 µS/cm. Water transparency ranges from 1.2–1.6 metres with mean of 1.3 metres. The water body is oligotrophic (low nutrient content) and stratified.

Location

Located in Gummersbach, North Rhine-Westphalia, Germany. The responsible authority is Oberbergischer Kreis (Oberberg District). Parking information is not provided.

Water Quality

Water quality classification: excellent (2019–2022). No microbiological, chemical, or sediment contamination detected. No cyanobacteria blooms observed in the past four years. Risk of future cyanobacteria mass development is low. Risk of future phytoplankton mass development is low. No relevant pollution sources currently identified.

Risks

Low risk of cyanobacteria mass development. Low risk of phytoplankton mass development.