- A dry lake is an ephemeral lakebed, or a remnant of an endorheic lake.
- It consist of fine-grained sediments infused with alkali salts.
- Alternative names for the dry lake include alkali flat and playa.
- A playa lake may cover a wide area, but it is never deep.
- Most water in it evaporates.
- leaving a layer of salt on the surface.
- These salt covered stretches are called saltpans.
- If its basin is primarily salt then the dry lake is called a salt pans , pan, hardpan, or salt flat.
- dry lake is typically dry, hard and rough during the dry season, but wet and very soft in the rainy season.
- Dry lakes are generally small, round depressions in the surface of the landscape.
- A playa lake is formed when rain fills a round depression in the landscape, creating a small lake.
- The water is generally freshwater, When all of the water evaporates, a playa is formed.
- The playa appears as a flat bed of clay, generally encrusted with precipitated salts.
- These evaporate minerals are a concentration of weathering products that have been left behind.
- Some examples of evaporite minerals are sodium carbonate, borax, and other salts. Playas are often found in bajadas, a depositional landform of desert environments.
- Dry lakes are typically formed in semi-arid to arid regions of the world.
- The largest concentration of dry lakes in the world (nearly 22,000) is in the southern High Plains of Texas and Eastern New Mexico.
examples-
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| Death Valley California |
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| Salar de Uyuni in Bolivia |
- High Plains of Texas
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| Racetrack Playa |
- Eastern New Mexico
- Potosi
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