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A probable location for Brower's Spring in Montana. Brower's Spring is a spring in the Centennial Mountains of Beaverhead County, Montana that was identified by surveyor Jacob V. Brower in 1888 as the ultimate headwaters of the Missouri River and thus of the fourth-longest river system in the world, the 3,902-mile-long (6,280 km) Mississippi–Missouri River.
In particular, there seems to exist disagreement as to whether the Nile [3] or the Amazon [4] is the world's longest river. The Nile has traditionally been considered longer, but in 2007 and 2008 some scientists claimed that the Amazon is longer [5] [6] [7] by measuring the river plus the adjacent Pará estuary and the longest connecting tidal ...
Kazumura Cave is a lava tube and has been surveyed at 40.7 miles (65.5 km) long and 3,614 feet (1,102 m) deep making it the longest and deepest lava tube in the world. [note 1] [2] [3] The cave is located on the island of Hawaiʻi on the eastern slope of Kīlauea. Kīlauea is the most recently active volcano on the Big Island.
Second-longest and largest river in the world, undammed as well as unbridged, does not form a delta while joining the sea due to adequate thrust of river water to overcome the sea water wave and tidal thrusts. 1 Lena River: 4,472 km (2,779 mi) 2,500,000 km 2 (970,000 sq mi) 17,000 m 3 /s (600,000 cu ft/s) Arctic Ocean: Longest undammed river in ...
At 1,469 miles (2,364 km), it is the sixth-longest river in the United States, [7] the second-longest tributary in the Mississippi–Missouri system, and the 47th longest river in the world. Its origin is in the Rocky Mountains in Lake County, Colorado, near Leadville.
The Meramec River (/ ˈ m ɛr ɪ m æ k /), sometimes spelled Maramec River (the original US mapping spelled it Maramec but later changed it to Meramec), is one of the longest free-flowing waterways in the U.S. state of Missouri, draining 3,980 square miles (10,300 km 2) [2] while wandering 218 miles (351 km) [3] from headwaters southeast of Salem to where it empties into the Mississippi River ...
Apurímac River. The Apurímac River (Quechua: Apurimaq mayu IPA: [ˈapʊ ˈɾɪmaχ ˈmajʊ]; Spanish: río Apurímac, IPA: [ˈri.o apuˈɾimak]; from Quechua apu 'chief' and rimaq 'the one who speaks, oracle', thus 'the chief oracle') rises from glacial meltwater of the ridge of the Mismi, a 5,597-metre-high (18,363 ft) mountain in the Arequipa Province in the south-western mountain ranges ...
There are some tributaries within the Shannon River Basin which have headwaters that are further in length (from source to mouth) than the Shannon Pot source's length of 360.5 km (224 miles), such as the Owenmore River, total length 372 km (231 mi) in County Cavan [15] and the Boyle River, total length 392.1 km (243.6 mi) with its source in ...