Kruppsee Freibad

Germany Lake 1 - Excellent

Kruppsee is an artificial lake bathing area located in Duisburg, Germany. It has been designated as a bathing water body for more than 30 years. The bathing area covers approximately 150 metres of shoreline and spans about 13 hectares with an average depth of 3.3 metres and maximum depth of 6.2 metres. The lake has sandy substrates and a naturally structured shoreline, with water transparency typically ranging from 1 to 2.5 metres.

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Water

Artificial lake covering approximately 13 hectares. Average depth 3.3 metres, maximum depth 6.2 metres. Water temperature ranges from 14.5°C to 23.8°C (as of October 2024). pH values range from 8.01 to 8.45. Conductivity ranges from 249 to 652 µS/cm. Water transparency ranges from 1 to 2.5 metres. The lake is mesotrophic with natural nutrient content. Water exchange time exceeds 30 days through groundwater flow. The catchment area is very small at less than 10 square kilometres. The substrate is sandy.

Location

Kruppsee/Freibad is located in Duisburg, Germany. The bathing area operator is Schwemmen u. Tränken von Tieren 1913 e.V., located at Bachstr. 2, 47229 Duisburg. The responsible authority is the City of Duisburg Health Department, Ruhrorter Str. 195, 47119 Duisburg.

Water Quality

Water quality classification was rated as 'excellent' for all four years from 2020 to 2023. No relevant pollution sources have been identified. Sediments show no microbiological, chemical, or physical contamination.

Risks

Medium risk of cyanobacteria water blooms has been observed within the last four years, with medium likelihood of future mass developments. Low risk of macroalgae and low risk of phytoplankton mass development. Frequent bird populations and frequent fish stocking are present in the water body.