Mondo Knows Facts
Crater Lake is the deepest lake in the United States
Formed in a collapsed volcanic caldera in Oregon, Crater Lake reaches a measured depth of 594 metres.
Roughly 7,700 years ago, a massive eruption caused the volcano Mount Mazama to collapse into itself, creating a deep caldera bowl. Because the lake has no river inlets or outlets, its water comes entirely from snow and rainfall, resulting in extreme water clarity. Sunlight penetrates deeply, producing intense deep blue hues.
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Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.
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Tags: crater lake, oregon, lakes, volcanoes
Crater Lake is the deepest lake in the United States: the short answers
- Where does this come from, and can I check it?
- Formed in a collapsed volcanic caldera in Oregon, Crater Lake reaches a measured depth of 594 metres. The figure is taken from USGS, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
- Is this really a world geography fact?
- Yes. It sits on the World Geography shelf, one of 1,090 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
- What else can I read about it?
- The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.