Yes, but not in the way you might think. Soap Lake doesn't have commercially manufactured soap floating in it. It's named for the naturally occurring, soapy-feeling foam that forms on its surface.
Why Does Soap Lake Feel Soapy?
Soap Lake's unique composition, a result of its formation by the Missoula Floods and its meromictic nature (meaning its layers of water don't mix), contributes to its "soapy" feel. This is due to:
- High Mineral Content: The lake is rich in various minerals, including alkaline substances. These minerals react to create a slippery, almost soapy, sensation on the skin.
- Natural Foam: The combination of minerals and organic matter in the water creates foam when agitated by wind or waves. This foam resembles soap suds, adding to the "soapy" appearance.
In Summary
While Soap Lake doesn't contain actual manufactured soap, its high mineral content and naturally forming foam give the water a distinctive soapy feel and appearance, hence the name.