Water
Lake Rogozińskie (Lake Rogoźno), a glacial lake. Surface area: 125.8–148.2 hectares. Dimensions: 5.09 km × 0.31 km. Maximum depth: 5.8 m. Average depth: 3.0 m. Water level elevation: 69.2–69.7 m above sea level. Shoreline length: 50 m.
Location
Rogoźno, Plażowa street, Wielkopolskie Voivodeship, Oborniki County. The nearest town is Rogoźno.
Facilities
Designated swimming zone in water, beach recreation and sports area, pontoon and jetty, mooring facilities for water equipment, designated grill and fire pit areas, water supply point, rubbish bins, toilet, showers, changing rooms, WOPR flag mast, lifeguard, designated children's play area on beach, ban on domestic animals, bathing regulations available for viewing, information board.
Season
1 July 2025 – 31 August 2025. Opening hours: 10:00–18:00.
Water Quality
Water quality classification 2025: Excellent. Maximum permissible concentrations: Escherichia coli 1000 CFU/100 ml, Enterococci 400 CFU/100 ml. Monitoring results from 2025 show water suitable for bathing on 13 August, 30 July, 16 July, and 26 June. Algal blooms were recorded in previous years (2024, 2023, 2022, 2021).
Risks
Cyanobacterial blooms (algal blooms) were recorded on multiple dates: 20 August 2024, 9 July 2024, 3 July 2023, 24 August 2022, 5 August 2022, 22 July 2022, 18 July 2022, 26 August 2021, 21 August 2021, 10 August 2021 (twice), and 4 August 2021. Dead fish were reported on 3 July 2023.