# Triple divide

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A triple divide or triple watershed is a point on Earth's surface where three drainage basins meet. A triple divide results from the intersection of two drainage divides. Triple divides range from prominent mountain peaks to minor side peaks, down to simple slope changes on a ridge which are otherwise unremarkable. The elevation of a triple divide can be thousands of meters to barely above sea level. Triple divides are a common hydrographic feature of any terrain that has rivers, streams and/or lakes.
Topographic triple divides do not necessarily respect the underground path of water. Thus, depending on the infiltration and the different geological layers, the hydrologic triple divide is often offset from the topographic triple divide.
A hydrological apex is a triple divide whose waters flow into three different oceans. Triple Divide Peak in the U.S. state of Montana or, depending on definition, Snow Dome in Canada are the only such places on Earth.

## Africa

An unnamed hill on the border between the Central African Republic and South Sudan: the exact point is at 09°08′24″N 23°28′07″E﻿ / ﻿9.14000°N 23.46861°E﻿ / 9.14000; 23.46861﻿ (Congo-Nile-Lake Chad Triple Divide). Water from this point flows to the Atlantic Ocean via the Congo River, to the Mediterranean Sea via the Nile, or to endorheic Lake Chad. At this point meet the second, third and eighth largest drainage basins in the world, making it one of the most important triple divides on earth.

## Antarctica

Antarctica is completely circled by the Southern Ocean, and so it has no triple divides.
Older definitions of the oceans did not include the Southern Ocean, and instead had the Atlantic, Pacific and Indian Oceans touch the shores of Antarctica. Based on this outdated definition, Dome Argus is the highest point in the East Antarctic ice sheet and could be considered a triple divide if it is assumed that the ice forms a watershed. (80°22′S 77°21′E﻿ / ﻿80.367°S 77.350°E﻿ / -80.367; 77.350﻿ (Dome Argus))

## Asia

Asia is dominated by endorheic basins. There is a point in southern China where the Pacific Ocean, Indian Ocean, and endorheic basins meet and another point in northern China where the Pacific Ocean, endorheic and Arctic Ocean basins meet.

## Australia

Australia has two continental drainage divide tripoints, both close to each other along Queensland's Great Dividing Range. Both are named after two 1845 exploration party leaders who sought to solve the question of Australia's rivers, Thomas Mitchell and Edmund Kennedy.
* Mitchell Junction is in North Queensland, on Triple C Pastoral Station, near the White Mountains National Park. Water falling on the tripoint can flow either to the Pacific Ocean via the Burdekin River, to the Indian Ocean, via the Flinders River flowing to the Gulf Of Carpentaria and the Indonesian Throughflow and lastly to Lake Eyre via Cooper Creek. approximately 20°20′58″S 145°03′17″E﻿ / ﻿20.349540608585798°S 145.05459085035665°E﻿ / -20.349540608585798; 145.05459085035665﻿ (Mitchell Junction)
* Kennedy Junction is in Central Queensland, on Caldervale Station, near Carnarvon National Park. Water falling on the tripoint can flow either to the Pacific Ocean via the Fitzroy River, to the Southern Ocean, via Murray/Darling River and to Lake Eyre via Cooper Creek. 24°55′22″S 146°49′27″E﻿ / ﻿24.9227°S 146.8241°E﻿ / -24.9227; 146.8241﻿ (Kennedy Junction)

## Europe

| Landmark name | Coordinates | Location | Watersheds |
| Lunghin Pass | 46°24′48.71″N 9°39′48.53″E﻿ / ﻿46.4135306°N 9.6634806°E﻿ / 46.4135306; 9.6634806﻿ (Lunghin Pass) | Piz Lunghin, Switzerland | North Sea (Rhine) Black Sea (Danube) Mediterranean Sea (Po) |
| Klepáč | 50°09′27.01″N 16°47′27″E﻿ / ﻿50.1575028°N 16.79083°E﻿ / 50.1575028; 16.79083﻿ (Klepáč) | Králický Sněžník Mountains, Czech Republic and Poland | North Sea (Orlice to Elbe) Black Sea (Morava to Danube) Baltic Sea (Eastern Neisse to Oder) |
| Unnamed point | 47°56′29.2″N 5°30′17.2″E﻿ / ﻿47.941444°N 5.504778°E﻿ / 47.941444; 5.504778﻿ (Langres Plateau Triple Divide) | Langres, France | North Sea (Meuse to Rhine) English Channel (Seine) Mediterranean Sea (Tille to Saône to Rhône) |
| Witenwasserenstock | 46°31′41.9″N 8°28′27.3″E﻿ / ﻿46.528306°N 8.474250°E﻿ / 46.528306; 8.474250﻿ (Witenwasserenstock) | Valais and Uri, Switzerland | North Sea (Rhine) Adriatic Sea (Po) Mediterranean Sea (Rhône) |
| Roundway Hill | 51°22′39.0″N 1°59′08.2″W﻿ / ﻿51.377500°N 1.985611°W﻿ / 51.377500; -1.985611﻿ (Roundway) | Devizes, Wiltshire, United Kingdom | North Sea (River Kennet to the Thames) English Channel (Hampshire Avon) Atlantic Ocean (Bristol Avon to the Severn) |

## North America

North America has 3 triple divides in the United States which are intersections of continental divides, and a fourth one in British Columbia. Waters at these triple divides flow into three different oceans, seas or gulfs. Triple Divide Peak in Montana is considered the triple divide "hydrological apex" of North America, though Snow Dome on the Alberta-British Columbia border also has a claim depending on how the Arctic and Atlantic oceans are defined. North America is the only continent that has a triple point dividing basins draining into three different oceans. Where the Continental Divide splits and joins to form the boundary of the Great Divide Basin, it forms two triple points.
Triple divides of North America :
| Landmark name | Coordinates | Location | Watersheds | Divides |
| Triple Divide Peak | 48°34′23″N 113°31′00″W﻿ / ﻿48.57306°N 113.51667°W﻿ / 48.57306; -113.51667﻿ (Triple Divide Peak) | Flathead County, Montana | Pacific Ocean (Columbia River) Atlantic Ocean (Mississippi River to Gulf of Mexico) Hudson Bay (Nelson River) | Continental Divide of the Americas and Laurentian Divide |
| Snow Dome | 52°11′13″N 117°19′01″W﻿ / ﻿52.18694°N 117.31694°W﻿ / 52.18694; -117.31694﻿ (Snow Dome) | Alberta and British Columbia | Pacific Ocean (Columbia River) Arctic Ocean (Mackenzie River) Hudson Bay (Nelson River) | Continental Divide of the Americas and Arctic Divide |
| Unnamed hill | 41°50′48″N 77°50′14″W﻿ / ﻿41.8467340°N 77.8372183°W﻿ / 41.8467340; -77.8372183﻿ (Unnamed hill in Potter County, PA) | Potter County, Pennsylvania | Gulf of Mexico (Allegheny River) Atlantic Ocean (Susquehanna River) Saint Lawrence River (Genesee River to Lake Ontario) | Eastern Continental Divide and Saint Lawrence River Divide |
| Hill of Three Waters | 47°26.863′N 92°56.8′W﻿ / ﻿47.447717°N 92.9467°W﻿ / 47.447717; -92.9467﻿ (Hill of Three Waters) | approximately 3.2 km (2 mi) north of Hibbing, Minnesota | Hudson Bay (Shannon River (Minnesota) to Nelson River) Gulf of Mexico (Prairie River (Mississippi River tributary) Saint Lawrence River (East Swan River) | Saint Lawrence River Divide and Laurentian Divide |
| Eastern divide termination | 30°15.146′N 082°23.578′W﻿ / ﻿30.252433°N 82.392967°W﻿ / 30.252433; -82.392967﻿ (Eastern Continental Divide termination)) | near Kissimmee, Florida | Lake Okeechobee (Kissimmee River) Atlantic Ocean (Miami River Gulf of Mexico (Withlacoochee River) | Lake Okeechobee basin and the Eastern Continental Divide |
| Great Divide Basin | 42°00′01″N 107°59′02″W﻿ / ﻿42.00028°N 107.98389°W﻿ / 42.00028; -107.98389﻿ (Great Divide Basin North) | Wyoming, where the Continental Divide splits and joins to form the boundary of the Great Divide Basin | Pacific Ocean (Green River) Atlantic Ocean (North Platte Great Divide Basin | Continental Divide of the Americas, Great Divide Basin |
| Guzmán Basin | 33°08′34″N 107°51′16″W﻿ / ﻿33.1427458°N 107.8545162°W﻿ / 33.1427458; -107.8545162﻿ (Reeds Peak, NM) | Reeds Peak, New Mexico | Pacific Ocean (Colorado) Gulf of Mexico (Rio Grande) Guzmán Basin | Continental Divide of the Americas, Great Divide Basin |
| Chihuahua rim, Guzmán Basin | 31°19′56.9″N 108°45′21.5″W﻿ / ﻿31.332472°N 108.755972°W﻿ / 31.332472; -108.755972﻿ (Chihuahua Rim) | Chihuahua, Mexico | Pacific Ocean (Colorado) Gulf of Mexico (Rio Grande) Guzmán Basin | Continental Divide of the Americas, Great Divide Basin |
| Three Waters Mountain | 43°23′37″N 109°47′09″W﻿ / ﻿43.39361°N 109.78583°W﻿ / 43.39361; -109.78583﻿ (Three Waters Mountain) | Wyoming | Gulf of California (Colorado) Pacific Ocean (Columbia) Gulf of Mexico (Mississippi) | Continental Divide of the Americas, Unnamed Divide |
| Commissary Ridge triple divide | 42°35′18″N 110°44′09″W﻿ / ﻿42.588347°N 110.735839°W﻿ / 42.588347; -110.735839﻿ (Commissary Ridge) | Wyoming | Gulf of California (Colorado) Pacific Ocean (Columbia) Great Basin | |
Other points are often considered to be triple divides because they separate basins of continental rivers.
* Headwaters Hill in Saguache County, Colorado, near Chester (Arkansas River, Rio Grande River, Colorado River). This point has only a weak claim to being a continental triple divide because both the Rio Grande and Arkansas Rivers flow into the Gulf of Mexico. (38°20′52″N 106°15′11″W﻿ / ﻿38.3477709°N 106.2530695°W﻿ / 38.3477709; -106.2530695﻿ (Headwaters Hill))
The highest elevation (4,040 m or 13,240 ft) significant triple divide in the lower 48 states of the United States, in Kings Canyon National Park in Fresno/Inyo counties, California, is a sub-peak of Mount Wallace of the central Sierra Nevada:
* Crumbly Spire or Mount Wallace South Peak, Fresno/Inyo counties, California (Tulare Lake via Kings River, Owens Lake via Owens River, Pacific Ocean via San Joaquin River) (37°08′28″N 118°39′15″W﻿ / ﻿37.141188°N 118.654119°W﻿ / 37.141188; -118.654119﻿ (Crumbly Spire))
Numerous other triple divide points result from intersection of river basin divides, including:
* Young Lick Knob, Georgia (Savannah, Apalachicola, Mississippi) (34°49′22″N 83°39′09″W﻿ / ﻿34.82278°N 83.65250°W﻿ / 34.82278; -83.65250﻿ (Young Lick Knob))

## South America

There are triple points in South America where the divide splits.