Natural swimmingFeatured

Lake Sadská: free sand-quarry swimming with a nudist beach and dogs allowed

Lake Sadská is a former sand quarry near Nymburk and Poděbrady. It offers free swimming, a sandy beach with gradual water entry, grassy and shaded banks, a nudist beach, refreshments, seasonal paid parking and dogs allowed.

Reading time:
6 min read
Verified on:
14/05/2026
Country:
Czechia
Region:
Prague and Central Bohemia
Lake Sadská near Sadská in the Nymburk district, a former sand quarry with beaches
Photo: Overview of Jezero Sadská near Sadská, Nymburk District.jpg by Jiří Sedláček / Frettie, CC BY-SA 4.0, via Wikimedia Commons, CC BY-SA 4.0, Wikimedia Commons

Quick overview

Place type
natural swimming
Recommended stay
1–5 hours
Crowds
high in hot weather
Opening hours
Check before visiting according to the current season and operator.
Booking recommended
No
Tickets online only
No
Nudist beach
Yes

There is a designated or traditionally used nudist section.

Water quality
The town of Sadská states that water quality is monitored and tested during the summer season. Check current results before swimming.
Best time
summer morning, late afternoon
Avoid if possible
hot weekend midday

Lake Sadská is exactly the kind of place that gives Central Bohemian sand quarries their good reputation. It is not a polished swimming complex with turnstiles and paid loungers. It is a former sand quarry where you can swim for free, lie on sand or grass, find shade under trees and even bring a dog.

It lies near the Elbe between Sadská, Poděbrady and Nymburk, so it works well as a summer escape from Prague or a stop on a trip through the Elbe lowlands.

Why visit

Sadská is a good choice if you want natural swimming without an entry fee. The Sadská side has a sandy beach with gradual entry into the water. There are also grassy beaches, shaded banks and a nudist section.

A big advantage is that dogs are allowed according to the town information. Just be considerate, especially around children and sandy beach areas.

Swimming and atmosphere

The lake was created by sand extraction and has a pleasant sandy character. It is a natural site, not a swimming pool, so check current water quality before visiting in hot weather.

The atmosphere is freer than in paid areas. Families, dog owners, nudists, cyclists and casual swimmers all use the lake.

Practical tip

For a first visit, arrive from Sadská towards the front beach. If you want a quieter spot, walk along the shore towards grassy and shaded sections.

Summary

Lake Sadská is a pleasant Central Bohemian sand quarry with free swimming, sandy beach, nudist area, dogs allowed and simple facilities. It is not luxurious, but that is exactly its charm.

Sources and verification

Sources used to verify prices, opening details, rules, and practical information.

Information verified on: 14/05/2026