Slapy Reservoir Reservoir
Large reservoir on the Vltava River, boating popular
A reservoir on the Vltava River south of Prague, Slapy Reservoir hosts boating, swimming and weekend water sports. Day visitors use marinas, beaches and nearby dam viewpoints.
Slapy Reservoir at a Glance#
Address: Slapy Reservoir (Vodní nádrž Slapy), Vltava River, Czech Republic
About Slapy Reservoir#
Slapy Reservoir is an artificial lake on the Vltava River in the Czech Republic created by a dam and used for hydroelectric power, water regulation and recreation. It is one of the larger reservoirs on the Vltava downstream of Prague.
The reservoir is used extensively for boating, bathing and lakeside cottages; marinas and campsites line parts of the shore and pleasure-boat traffic is common in summer. The water body provides long sheltered stretches suitable for motor and sail craft.
The reservoir was formed when a dam was built on the Vltava in the mid-20th century to produce electricity and regulate the river flow. Since then the area developed significant recreational infrastructure and lakeside settlements.
Slapy lies on the Vltava River about 35-45 kilometres south of Prague, with the closest small towns and villages on its shores and forested hills rising away from the water.
- Location and recreation: Situated on the Vltava River roughly 40 kilometres south of Prague, it is a popular recreational area for boating, swimming and weekend house traffic from the capital.
What to See#
- Slapy Dam: A concrete dam on the Vltava River that created the reservoir and serves power generation and water regulation functions; it marks one end of the main reservoir body.
How to Get to Slapy Reservoir#
Slapy is about 40-60 minutes by car from Prague via the D4 motorway and local roads toward the town of Slapy. Trains and buses connect Prague to nearby towns, with local services to lakeside villages.
Tips for Visiting Slapy Reservoir#
- If driving from Prague, take the D4 and then local roads toward Slapy - the lakeshore has several public access points and picnic spots.
- Boaters should watch for changing winds on the Vltava; the reservoir is popular on warm weekends.
Best Time to Visit Slapy Reservoir#
Late spring through early autumn for water activities; weekends are busiest.
Weather & Climate near Slapy Reservoir#
Slapy Reservoir's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -3°C to 24°C. Moderate rainfall (513 mm/year).
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | Poor | -3° - 2° | -4° | 24 mm | overcast | 93% | 3.1 m/s | 0.1 low | 8.5h |
| February | Acceptable | -3° - 3° | -3° | 22 mm | overcast | 89% | 3.1 m/s | 0.2 low | 9.9h |
| March | Acceptable | 1° - 8° | 1° | 31 mm | overcast | 83% | 3.3 m/s | 0.4 low | 11.7h |
| April | Good | 4° - 13° | 7° | 32 mm | partly cloudy | 76% | 3.0 m/s | 0.8 moderate | 13.6h |
| May | Good | 9° - 19° | 14° | 66 mm | overcast | 73% | 2.8 m/s | 1.2 high | 15.2h |
| June | Good | 12° - 21° | 17° | 71 mm | overcast | 68% | 2.5 m/s | 1.4 high | 16.0h |
| July | Very Good | 13° - 23° | 18° | 72 mm | partly cloudy | 64% | 2.5 m/s | 1.4 high | 15.6h |
| August | Very Good | 13° - 24° | 18° | 62 mm | partly cloudy | 65% | 2.3 m/s | 1.2 high | 14.2h |
| September | Very Good | 9° - 19° | 14° | 40 mm | partly cloudy | 72% | 2.4 m/s | 0.7 moderate | 12.4h |
| October | Acceptable | 5° - 13° | 8° | 31 mm | overcast | 82% | 2.6 m/s | 0.3 low | 10.6h |
| November | Poor | 1° - 6° | 1° | 33 mm | overcast | 90% | 2.8 m/s | 0.1 low | 8.9h |
| December | Poor | -2° - 3° | -3° | 29 mm | overcast | 93% | 3.0 m/s | 0.1 low | 8.0h |