Bathing lake
Steinhude bathing island
Bathing ban
There is currently a massive bloom of cyanobacteria (blue-green algae) in Steinhuder Meer. Due to low water clarity and to prevent any health risks posed by blue-green algae, swimming is prohibited in this EU-designated bathing water!
For more information, see the Questions and Answers on Blue-Green Algae
(September 7, 2026)
This is a beach vacation at its best: With 300 meters of the finest sandy beach, shallow waters, and plenty of fun activities, this island offers the perfect setting for a truly wonderful day at the beach—and not just for families with children. Here, it’s time to break out the water wings, inflate the air mattresses, and head out into the Seinhuder Meer. And when the beachgoers leave the beach, things don’t always quiet down right away. During the season, this idyllic island also hosts a variety of music events, so there’s plenty to enjoy here in the evening as well.
The swimming island is located on the southeastern shore of the Steinhuder Meer, Germany's largest shallow lake.
The EU has rated the quality of this bathing water as "good." During the swimming season, from May 15 to September 15, the Hanover region monitors the water quality. You can view the results by clicking the link below.
Read the results of the bathing water analysis
The quality of bathing water:
What does Steinhude Swimming Island have to offer?
Overview:
Water surface area: 2,910 ha
; maximum depth: 2.9 m
; length of the swimming area: 100 m
; Food and beverage options: kiosk, café, bistro beer garden
; Restroom facilities: restrooms, beach showers
Water area:
31 square kilometers of water, large shallow water zone, rubber boats and inflatable mattresses permitted
Amenities:
restroom, shower, changing room, sunbathing area, sandy beach, trees
Activities:
Ball games, a great playground with interesting play equipment, an observation tower, and the permanent exhibition "Nature and the Environment at Steinhuder Meer"
Dining:
Kiosk, café, bistro beer garden
The Steinhude Swimming Island Info Profile—Other Things Worth Knowing
The Steinhuder Meer is designated as a landscape conservation area and is surrounded by several nature reserves. The lake is largely fed by groundwater. Additional water flows into the lake via four tributaries. Additional water flows into the lake via four tributaries. The towns of Steinhude and Mardorf, located on the lake, discharge rainwater into the Steinhuder Meer via a separate sewer system. Rainwater also carries debris into the lake, which may contain bacteria. During heavy rainfall, these bacteria can reach the swimming area and affect the quality of the bathing water.
Due to the aforementioned discharges, the pollution potential is assessed as slightly elevated.
Because of the high nutrient content in the lake, mass blooms of blue-green algae occur frequently. The potential for a mass bloom is considered to be elevated to high.
No mass proliferation of macroalgae or phytoplankton has been observed in the lake in recent years. The potential for mass proliferation is classified as low
.
The Department of Health, as the responsible authority, conducts regular tests of the bathing water at the swimming area.
The first bathing water sample is taken before the start of the season.
During the swimming season, from May 15 to September 15, samples are taken once a month. The water is tested for the indicator bacteria Escherichia coli and intestinal enterococci. These results are published, among other places, on the website www.hannover.de/baden and on the bathing water portal of the Lower Saxony State Health Office.
If the authorities become aware of a blue-green algae bloom, they will test the water for blue-green algae and issue an official warning regarding the acute occurrence
of blue-green algae. If large quantities of toxin-producing blue-green algae are detected, a swimming ban will be imposed and announced both on-site and online.
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