Olson is an artificial reef site located in Prague, Czech Republic. This freshwater location offers shore entry and reaches depths of up to 23 metres, with an average depth of 17 metres. Visibility at the site ranges from 2 to 8 metres, providing a practical environment for divers to practice navigation and build skills in variable conditions. The current is variable, so it is recommended to assess the water before entering. The site is suitable for beginners with an open water certification and remains accessible for diving throughout the year. Please check locally for current information regarding facilities before travelling.

Vltava Pod Karlovým mostem is an urban freshwater dive site situated directly beneath the Charles Bridge in Prague. The site features submerged artificial structures at depths ranging from 3 to 4 metres. Divers should expect challenging conditions, including moderate currents and low visibility typically between 1 and 2 metres. Due to active boat traffic and potential entanglement hazards, constant vigilance is required. The water is very cold, ranging from 8 to 10 degrees Celsius, necessitating appropriate exposure protection. This site is suitable for beginner divers, though it requires self-sufficiency. Species recorded around this area include snails, common carp, and chub, though sightings are not confirmed at this specific location.

Náplavka is a freshwater dive site located within the Slapy Reservoir in the Czech Republic. The site features a mix of reef, wreck, and artificial reef structures. Divers can explore depths ranging from 5 to 45 metres, with an average depth of 25 metres. Entry is via the shore, and conditions include mild currents and visibility fluctuating between 1 and 10 metres. Due to the variable visibility and potential for entanglement, this site is suited for intermediate divers. Water temperatures are seasonal, ranging from 0 to 4°C in winter to 16 to 24°C in summer. Divers should remain aware of boat traffic and cold water conditions during their 60-minute dives.

Hráz Slapy in the Slapy Reservoir offers a technically demanding freshwater dive focused on submerged wrecks and artificial reef structures. The site reaches depths between 25 and 43 metres, with an average depth of 35 metres. Divers should expect mild currents and visibility ranging from 2 to 8 metres. Due to the depth and potential for low visibility, an underwater torch is essential. Shore entry is available, though caution is required in the shallows to avoid sharp rocks. The site is suited for advanced divers and provides full facilities, including air fills, changing rooms, and showers, to support multi-dive sessions.

Nova Rabyne is a flooded quarry in the Slapy Reservoir that serves as an artificial reef and wreck site. Divers can explore various submerged structures at depths ranging from 12 to 25 metres, with shallower areas suitable for buoyancy practice. The site features no current, providing a relaxed environment for beginners. Visibility is variable, typically ranging between 1 and 11 metres. The location is accessible via shore entry and supports night diving. On-site facilities include parking, showers, a café, and a dive shop for equipment hire and air fills. Divers should remain cautious of sharp edges on wrecks and potential entanglement risks on submerged structures.

Zátoka Babor is a freshwater dive site in the Slapy Reservoir, Bohemia, featuring an artificial reef structure. The site offers depths ranging from 5 to 45 metres, suitable for beginners at shallower levels while providing challenges for experienced divers at depth. Visibility varies between 1 and 10 metres, often requiring a torch due to low-light conditions. The current is mild. Divers can expect to encounter typical temperate freshwater fish and invertebrates associated with this habitat. Shore and boat entries are both available. On-site facilities include a dive shop and guided tours, and night diving is permitted.

Vraky pod vyhlídkou is a freshwater dive site located in the Slapy Reservoir near Ždáň village. The site is characterised by submerged car wrecks situated beneath a viewpoint. Divers can explore depths ranging from 8 to 45 metres, with an average depth of 15 metres. Conditions vary, with visibility typically between 1 and 10 metres depending on weather and water temperature. The site is suitable for intermediate divers and offers both shore and boat entry options. Facilities available at the location include parking, boat charter services, and a dive shop. The water temperature fluctuates between 4°C in winter and 24°C in summer. Low visibility is a noted hazard at this site.

Sladovařská zátoka in Slapy Reservoir is a freshwater site featuring a deliberately sunk wreck and artificial reef structures. Suitable for beginners, the site offers depths ranging from 5 to 25 metres with an average of 17 metres. Entry is via the shore, and divers encounter mild currents. Visibility varies significantly, ranging from 1 to 10 metres, and water temperatures are cold, requiring appropriate thermal protection. Divers should be aware of boat traffic and potential entanglement risks within the structures. The habitat supports various temperate freshwater fish and invertebrates typical of the region. A typical dive lasts 40 minutes, and the use of a surface marker buoy is recommended.