What is Crater Lake?
Q: What is Crater Lake?
A: Crater Lake is a caldera lake in the U.S. state of Oregon, and it is the main attraction of Crater Lake National Park.
Q: What is unique about the lake?
A: The lake is famous for its blue color, clear water, and the fact that it partly fills a nearly 2,148-foot (655-meter) deep caldera.
Q: How was the volcanic crater formed?
A: The volcanic crater was formed by the collapse of the volcano, Mount Mazama, about 7,500 years ago.
Q: Are there any rivers flowing into or out of the lake?
A: No, there are no rivers flowing into or out of the lake.
Q: How is the evaporation compensated for?
A: The evaporation is compensated for by rain and snowfall at a rate such that the total amount of water is replaced every 250 years.
Q: What is the Old Man of the Lake?
A: The Old Man of the Lake is a famous piece of driftwood that has been moving up and down in the water for more than 100 years.
Q: Was the lake originally inhabited by fish?
A: No, originally fish did not live in the lake, but people stocked the lake with different kinds of fish between 1888 and 1941, and several species of fish still live in the lake.
