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Last updated: April 8, 2026

Quick Answer: Yes, you can swim in the Great Salt Lake, but it's a unique experience due to its extreme salinity. The high salt concentration makes it incredibly buoyant, causing swimmers to float effortlessly. However, the salt can be irritating to the eyes and skin, and it's advisable to rinse off thoroughly afterward.

Key Facts

The Great Salt Lake is about 5-9 times saltier than the ocean.
Its extreme salinity makes it one of the saltiest bodies of water in the world.
Swimmers experience significant buoyancy, allowing them to float easily.
Rinsing with fresh water after swimming is highly recommended.
While possible, swimming in the Great Salt Lake is not comparable to a typical freshwater swim due to its distinct physical properties and potential for discomfort.

Overview

The Great Salt Lake, located in Utah, is a renowned natural wonder known for its distinctive characteristics. It is the largest saltwater lake in the Western Hemisphere and the fourth-largest terminal lake in the world. Unlike most lakes, it is a hypersaline lake, meaning its salt concentration is significantly higher than that of the ocean. This extreme salinity is a direct result of its status as a terminal lake, where water flows in from rivers but has no outlet, causing dissolved minerals to accumulate over time.

Swimming in the Great Salt Lake is an experience unlike any other, primarily due to its exceptionally high salt content. The density of the water, caused by the dissolved salts, creates a buoyancy that is astonishingly powerful. This makes it virtually impossible to sink, and swimmers find themselves floating on the surface with minimal effort. While this buoyancy is a major draw for visitors, the intense saltiness also presents certain considerations for those venturing into its waters, impacting comfort and requiring specific precautions.

How It Works

Extreme Salinity: The Great Salt Lake's salinity varies but is typically around 5-9 times saltier than the ocean. This high concentration of dissolved minerals, primarily sodium chloride, significantly increases the density of the water.
Buoyancy Principle: According to Archimedes' principle, an object immersed in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced. In the Great Salt Lake, the denser, salt-laden water exerts a stronger buoyant force, making it easier for a person to float.
Body Density: Human bodies are less dense than the extremely saline water of the Great Salt Lake. This difference in density means that the buoyant force is greater than the gravitational pull on the body, leading to effortless floating.
Mineral Composition: While sodium chloride is the primary salt, other minerals like magnesium, potassium, and sulfates are also present. These contribute to the water's overall density and can also affect the sensation on the skin.

Key Comparisons

Feature	Great Salt Lake	Ocean
Salinity (approx.)	5-9 times ocean salinity	~35 parts per thousand
Buoyancy	Extremely high, effortless floating	Moderate, requires effort to float
Water Clarity	Often turbid due to algae and sediment	Varies, can be clear or turbid
Potential for Discomfort	High (eye and skin irritation)	Moderate (stinging of cuts, mild irritation)
Marine Life	Limited to brine shrimp, brine flies, and microorganisms	Diverse, including fish, mammals, and plants

Why It Matters

Ecological Significance: The Great Salt Lake serves as a critical stopover point for millions of migratory birds along the Pacific Flyway, providing vital food sources like brine shrimp and brine flies. Its health is directly linked to the well-being of these avian populations.
Economic Impact: The lake supports various industries, including mineral extraction (potash, magnesium, salt) and tourism. Recreational activities, including the unique experience of floating, draw visitors and contribute to the local economy.
Environmental Concerns: Declining water levels in the Great Salt Lake due to drought and increased water diversion pose significant environmental threats. This shrinking can lead to increased dust storms carrying toxic heavy metals, impacting air quality and public health in the surrounding populated areas.

In conclusion, swimming in the Great Salt Lake is a physically remarkable experience defined by its intense buoyancy. While the sensation of floating is undeniably unique and a significant draw for tourists and locals alike, visitors should be prepared for the accompanying challenges, such as potential eye and skin irritation. Understanding the science behind its hypersalinity and its ecological and economic importance underscores the value of this remarkable natural phenomenon and the critical need for its conservation.