Hańcza Lake is a deep freshwater site in Poland, reaching depths of 108 metres. The topography features a dramatic drop-off that begins at approximately 12 metres, transitioning into a steep, deep-water environment. Visibility varies between 3 and 12 metres. Due to the significant depth, cold water temperatures, and potential for overhead environments, this site is strictly for advanced and technical divers. Drysuits and appropriate thermal protection are essential. Strong currents can occur, requiring careful coordination during boat entries and exits. Guided tours are available through the local dive shop and are recommended for first-time visitors to navigate the complex deeper sections.

Hańcza Parking 3 offers a freshwater diving experience in Hańcza Lake, featuring a combination of wall, reef, and artificial reef topography. Divers can access the water via shore or boat, encountering a hard bottom that slopes gently from the shallows. Training platforms are positioned between 4 and 8 metres for exercise. The site reaches depths of 25 metres, with an average depth of 7 metres. Conditions include mild currents and visibility ranging from 3 to 12 metres. Divers should be prepared for cold water temperatures and the presence of a thermocline. Facilities include parking, gear storage, air fills, showers, changing rooms, and a rinse station.

Busznica is a freshwater dive site located in Hańcza Lake, Poland. The topography features a reef structure that provides navigation interest for divers. Depths at this site range from 20 to 48 metres, requiring appropriate certification levels for deeper exploration. Visibility typically fluctuates between 5 and 10 metres. While the site is accessible year-round, water temperatures are low, particularly outside of the summer months, making drysuits or thick wetsuits advisable. Divers should be prepared to be self-sufficient as on-site facilities are not confirmed. The site is suitable for beginners in shallower sections, though deeper areas require advanced training.