Portal:Rivers
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The Rivers Portal Introduction
A river is a natural freshwater stream that flows on land or inside caves towards another body of water at a lower elevation, such as an ocean, lake, or another river. A river may run dry before reaching the end of its course if it runs out of water, or only flow during certain seasons. Rivers are regulated by the water cycle, the processes by which water moves around the Earth. Water first enters rivers through precipitation, whether from the runoff of water down a slope, the melting of glaciers or snow, or seepage from aquifers beneath the surface of the Earth.
Rivers flow and merge in confluences to form drainage basins, areas where all water eventually flows to a common outlet. Rivers have a great effect on the landscape around them. They may regularly overflow their banks and flood the surrounding area, spreading nutrients to the surrounding area. Sediment or alluvium carried by rivers shapes the landscape around it, forming deltas and islands where the flow slows down. Rivers rarely run in a straight line, instead, they bend or meander; the locations of a river's banks can change frequently. Rivers get their alluvium from erosion, which carves rock into canyons and valleys.
Rivers have sustained human and animal life for millennia, including the first human civilizations. The organisms that live around or in a river such as fish, aquatic plants, and insects have different roles, including processing organic matter and predation. Rivers have produced abundant resources for humans, including food, transportation, drinking water, and recreation. Humans have engineered rivers to prevent flooding, irrigate crops, perform work with water wheels, and produce hydroelectricity from dams. People associate rivers with life and fertility and have strong religious, political, social, and mythological attachments to them. (Full article...)
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The Petitcodiac River /pɛtiˈkoʊdi.æk/ is a river located in south-eastern New Brunswick, Canada. Local tourist businesses often refer to it as the "chocolate river" due to its distinctive brown mud floor and brown waters. Stretching across a meander length of 79 kilometres (49 miles), the river traverses Westmorland, Albert, and Kings counties, draining a watershed area of about 2,071 square kilometres (800 sq mi). The watershed features valleys, ridges, and rolling hills, and is home to a diverse population of terrestrial and aquatic species. Ten named tributaries join the river in its course toward its mouth in Shepody Bay. Prior to the construction of a causeway in 1968, the Petitcodiac River had one of the world's largest tidal bores, which ranged from 1 to 2 metres (3.3–6.6 ft) in height and moved at speeds of 5 to 13 kilometres per hour (3.1–8.1 mph). With the opening of the causeway gates in April 2010, the river is flushing itself of ocean silts, and the bore is returning to its former size.
The Mi'kmaq were the first to settle near the river, who used it as part of a portage route between Shubenacadie and the village of Petitcodiac, where they had a winter camp. In 1698, the region was colonized by Acadians from Port Royal, Nova Scotia; however, they were later expelled in 1755 during the Seven Years' War. During this period, Acadian resistance fighters based in Village-des-Blanchard (now Hillsborough) fought under the command of French leader Charles Deschamps de Boishébert in the Battle of Petitcodiac, attempting to repel British troops but ultimately suffering the destruction of most of their settlement. Three years later, British troops returned to the river and launched the Petitcodiac River Campaign. In the 1840s, the Greater Moncton area experienced a shipbuilding boom, which was halted following the arrival of the steam train, leading to the town's de-incorporation. These changes gradually marginalized the Petitcodiac River. (Full article...)
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Horseshoe Bend is a horseshoe-shaped meander of the Colorado River in the Glen Canyon National Recreation Area, located 5 miles (8 km) downstream from the Glen Canyon Dam and Lake Powell, near the town of Page, Arizona. It is accessible via hiking trail or an access road.
General images -
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Whitewater at Yosemite (from Whitewater) -
Anthropogenic influences on river systems. Examples are mainly from settings with a modest technological influence, especially in the period of about 10,000 to 4000 cal yr BP. (from River ecosystem) -
Devil's Throat Cave subterranean river from above (from Subterranean river) -
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The Effra is one of the subterranean rivers of London. It empties into the Thames by Vauxhall Bridge, from which this photograph was taken. (from Subterranean river) -
Co-occurrence network of a bacterial community in a stream (from River ecosystem) -
The Puerto Princesa cave can be entered by boat. (from Subterranean river) -
Cascade in the Pyrénées (from River ecosystem) -
Pondweed is an autochthonous energy source. (from River ecosystem) -
This stream operating together with its environment can be thought of as forming a river ecosystem. (from River ecosystem) -
Leaf litter is an allochthonous energy source. (from River ecosystem) -
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Common water hyacinth in flower (from River ecosystem) -
A subterranean river in the Cross Cave system of Slovenia. (Scale shown by people in photograph.) (from Subterranean river) -
Rafting is a watersport where buoyancy aids, helmets and wetsuits are mandatory and often imposed by law, due to the constant risk of falling off the boat and into the rapids (from Whitewater) -
Rapids in Mount Robson Provincial Park (from River ecosystem) -
Periphyton (from River ecosystem) -
Different biofilm components in streams. Principal components are algae and bacteria. (from River ecosystem) -
In Dante's Inferno, Charon ferries souls across the subterranean river Acheron. (from Subterranean river) -
The cave of source of the Buna can be entered by boat and dived through a cave system serving as an effluence of the Zalomka. (from Subterranean river) -
A forest stream in the winter near Erzhausen, Germany (from River ecosystem) -
New Zealand longfin eels can weigh over 50 kilograms. (from River ecosystem) -
The brook trout is native to small streams, creeks, lakes, and spring ponds. (from River ecosystem) -
Map of the world showing elevation levels (from Upland and lowland) -
Flowing rivers can act as dispersal vectors for plant matter and invertebrates. (from River ecosystem) -
A pensive Cooplacurripa River, NSW (from River ecosystem) -
Example of a river food web. Bacteria can be seen in the red box at the bottom. Bacteria (and other decomposers, like worms) decompose and recycle nutrients back to the habitat, which is shown by the light blue arrows. Without bacteria, the rest of the food web would starve, because there would not be enough nutrients for the animals higher up in the food web. The dark orange arrows show how some animals consume others in the food web. For example, lobsters may be eaten by humans. The dark blue arrows represent one complete food chain, beginning with the consumption of algae by the water flea, Daphnia, which is consumed by a small fish, which is consumed by a larger fish, which is at the end consumed by the great blue heron. (from River ecosystem)
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Did you know?
- ... that a tributary of the Chusovaya River (pictured) naturally dives underground for about 6 kilometres (3.7 mi)?
- ... that the Cheddar Yeo forms the largest underground river system in Britain?
- ... that the "Mad Raft Race" is an event held on the Chilkoot River as part of Fourth of July festivities observed in Haines, Alaska?
Related portals
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Topics
| Large-scale features | |
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| Alluvial rivers | |
| Bedrock river | |
| Bedforms | |
| Regional processes | |
| Mechanics | |
Subcategories
Quality content
 | This is a list of recognized content, updated weekly by JL-Bot (talk · contribs) (typically on Saturdays). There is no need to edit the list yourself. If an article is missing from the list, make sure it is tagged (e.g. {{WikiProject Rivers}}) or categorized correctly and wait for the next update. See WP:RECOG for configuration options. |
Featured articles
Aliso Creek (Orange County)- Balch Creek
- Big Butte Creek
- Bull Run River (Oregon)
- Chetco River
- Colorado River
- Columbia River
- Columbia Slough
- Fanno Creek
- Johnson Creek (Willamette River tributary)
- Jordan River (Utah)
- Little Butte Creek
- Plunketts Creek (Loyalsock Creek tributary)
- River Parrett
- Rogue River (Oregon)
- St. Johns River
- Tryon Creek
- Waterfalls in Ricketts Glen State Park
- White Deer Hole Creek
- Willamette River
Featured lists
- List of longest rivers of the United States (by main stem)
- List of longest streams of Idaho
- List of longest streams of Oregon
- List of tributaries of Bowman Creek
- List of tributaries of Catawissa Creek
- List of tributaries of Larrys Creek
- List of tributaries of Mahanoy Creek
- List of tributaries of Shamokin Creek
Good articles
1886 St. Croix River log jam- Abrahams Creek
- Adams River (British Columbia)
- River Avon, Bristol
- Big Wapwallopen Creek
- Black Creek (Susquehanna River tributary)
- Briar Creek (Susquehanna River tributary)
- Brunswick Falls
- Buffalo Creek (West Branch Susquehanna River tributary)
- Canajoharie Creek
- Catawissa Creek
- Celilo Falls
- Cem (river)
- Chollas Creek
- Cibolo Creek
- Covering of the Senne
- Darby Creek (Pennsylvania)
- Eddy Creek (Lackawanna River tributary)
- Esopus Creek
- Estuaries of Texas
- Everglades
- Fishing Creek (North Branch Susquehanna River tributary)
- Flushing River
- Fonteyn Kill
- Fossil Creek
- River Frome, Bristol
- Gowanus Canal
- Grande Ronde River
- Great Zab
- Hammersley Fork
- Harveys Creek
- Hudson River
- Hull Creek (Lackawanna River tributary)
- River Hull
- Hunlock Creek
- River Irwell
- Islais Creek
- Ithan Creek
- Jiloca (river)
- Kaweah River
- Kettle Creek (Pennsylvania)
- Keyser Creek
- Kings River (California)
- Kissena Creek
- Klamath River
- Kootenay River
- Laguna Canyon
- Leggetts Creek
- Little Applegate River
- Little Catawissa Creek
- Little Fishing Creek
- Little Wapwallopen Creek
- Mahanoy Creek
- Mahoning Creek (Susquehanna River tributary)
- Meadow Brook (Lackawanna River tributary)
- Merced River
- Messers Run
- Minetta Creek
- Minnehaha Park (Minneapolis)
- Missouri River
- Moston Brook
- Mud Creek (Chillisquaque Creek tributary)
- Muncy Creek
- Nanticoke Creek
- Neepaulakating Creek
- Nescopeck Creek
- Ombla
- Petitcodiac River
- Potlatch River
- River Arun
- River Brue
- River
- River Tone
- River Torrens
- River Weaver
- Roaring Brook (Lackawanna River tributary)
- Roaring Creek (Pennsylvania)
- River Rother, East Sussex
- River Rother, West Sussex
- San Juan Creek
- Santa Ana River
- Sava
- Saw Mill River
- Scotch Run (Catawissa Creek tributary)
- Severn bore
- Shickshinny Creek
- Shimna River
- Shinano River
- Snake River
- Solomon Creek
- Spring Brook (Lackawanna River tributary)
- Stafford Meadow Brook
- Stanislaus River
- Stikine River
- Stony Brook (Charles River tributary, Boston)
- Suiattle River
- Sulphur Creek (California)
- Tangascootack Creek
- Toby Creek
- Trinity River (California)
- River Trym
- Twomile Run
- Wainui Falls
- River Welland
- West Branch Fishing Creek
- West Creek (Pennsylvania)
- West Kill
- River Witham
- Yellala Falls
- Zarqa River
Things to do
- Join WikiProject Rivers
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- Add items to Did You Know?
- Add the portal link to the top of the See Also section of all relevant pages. This can be done by adding
{{Portal|Rivers}}immediately under the section header.
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