Answer: Russia

We’ll forgive you if you got today’s trivia wrong as there are lots of large collections of fresh water around the world but only one single largest fresh water lake. Brazil, thanks to the extensive Amazon river basin system contains a huge amount of the world’s fresh water. The Great Lakes lake system in the United States, framing the peninsular state of Michigan, collectively houses 21 percent of the world’s fresh water by volume. But if you want to see the largest amount of fresh water by volume collected in a single lake, you’ll need to travel to Russia.

There you’ll find Lake Baikal, a massive lake notable for many reasons. It’s the oldest and deepest fresh water lake in the world. It contains roughly 20 percent of the world’s unfrozen fresh water making it the largest single contained volume of fresh water on Earth, it is staggeringly deep with a maximum depth of 5,387 feet, the waters are considered among the clearest of any large fresh water lakes in the world, it’s the seventh largest lake in the world by surface area, and it has a short length of 395 miles (636 km).