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Most water in Earth's atmosphere and crust comes from saline seawater, while fresh water accounts for nearly 1% of the total. The vast bulk of the water on Earth is saline or salt water, with an average salinity of 35‰ (or 3.5%, roughly equivalent to 34 grams of salts in 1 kg of seawater), though this varies slightly according to the amount of runoff received from surrounding land.
They contain 21% of the world's surface fresh water by volume. [ 1 ] [ 2 ] [ 3 ] The total surface is 94,250 square miles (244,106 km 2 ), and the total volume (measured at the low water datum) is 5,439 cubic miles (22,671 km 3 ), [ 4 ] slightly less than the volume of Lake Baikal (5,666 cu mi or 23,615 km 3 , 22–23% of the world's surface ...
The entire ocean, containing 97% of Earth's water, spans 70.8% of Earth's surface, [8] making it Earth's global ocean or world ocean. [23] [25] This makes Earth, along with its vibrant hydrosphere a "water world" [43] [44] or "ocean world", [45] [46] particularly in Earth's early history when the ocean is thought to have possibly covered Earth ...
The single-arch granite dam formed Big Bear Lake, then the world's largest man-made lake. Engineers claimed the dam would not hold, and declared it "The Eighth Wonder of the World" when it did. The old dam is usually underwater because of the 20-foot higher dam built 200 feet west in 1912.
Most of Earth's surface is ocean water: 70.8% or 361 million km 2 (139 million sq mi). [96] This vast pool of salty water is often called the world ocean, [97] [98] and makes Earth with its dynamic hydrosphere a water world [99] [100] or ocean world. [101] [102] Indeed, in Earth's early history the ocean may have covered Earth completely. [103]
The world-average ecological footprint in 2016 was 2.75 global hectares per person (22.6 billion in total). With a world-average biocapacity of 1.63 global hectares (gha) per person (12.2 billion in total), this leads to a global ecological deficit of 1.1 global hectares per person (10.4 billion in total). [1]
Although promoted as the "Land of 10,000 Lakes", Minnesota has 11,842 lakes of 10 acres (4.05 ha) or more. [1] The 1968 state survey found 15,291 lake basins, of which 3,257 were dry. [ 2 ] If all basins over 2.5 acres were counted, Minnesota would have 21,871 lakes. [ 3 ]
The lake covers nearly 14,000 acres (57 km 2) with 190 miles (310 km) of shoreline touching three counties. [6] The lake is an average of 23 feet (7.0 m) deep with an estimated volume of 1.35 × 10 10 cubic feet (3.82 × 10 8 m 3 ).