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 rainfall, 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 in channeled watercourses and merge in confluences to form drainage basins, areas where surface 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 River Hull is a navigable river in the East Riding of Yorkshire in Northern England. It rises from a series of springs to the west of Driffield, and enters the Humber Estuary at Kingston upon Hull. Following a period when the Archbishops of York charged tolls for its use, it became a free navigation. The upper reaches became part of the Driffield Navigation from 1770, after which they were again subject to tolls, and the section within the city of Hull came under the jurisdiction of the Port of Hull, with the same result.
Most of its course is through low-lying land that is at or just above sea level, and regular flooding has been a long-standing problem along the waterway. Drainage schemes to alleviate it were constructed on both sides of the river. The Holderness Drainage scheme to the east was completed in 1772, with a second phase in 1805, and the Beverley and Barmston Drain to the west was completed in 1810. Since 1980, the mouth of the river has been protected by a tidal barrier at the estuary, which can be closed to prevent tidal surges entering the river system and causing flooding upriver. (Full article...)
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The Skjálfandafljót at Route 1 in northern Iceland. In the background is the waterfall of Goðafoss
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The brook trout is native to small streams, creeks, lakes, and spring ponds. (from River ecosystem) -
A subterranean river in the Cross Cave system of Slovenia. (Scale shown by people in photograph.) (from Subterranean river) -
Common water hyacinth in flower (from River ecosystem) -
Periphyton (from River ecosystem) -
Pondweed is an autochthonous energy source. (from River ecosystem) -
New Zealand longfin eels can weigh over 50 kilograms. (from River ecosystem) -
Co-occurrence network of a bacterial community in a stream (from River ecosystem) -
Map of the world showing elevation levels (from Upland and lowland) -
In Dante's Inferno, Charon ferries souls across the subterranean river Acheron. (from Subterranean river) -
A forest stream in the winter near Erzhausen, Germany (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) -
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) -
Cascade in the Pyrénées (from River ecosystem) -
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The Puerto Princesa cave can be entered by boat. (from Subterranean river) -
Leaf litter is an allochthonous energy source. (from River ecosystem) -
This stream operating together with its environment can be thought of as forming a river ecosystem. (from River ecosystem) -
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) -
Devil's Throat Cave subterranean river from above (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) -
Whitewater at Yosemite (from Whitewater) -
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Rapids in Mount Robson Provincial Park (from River ecosystem) -
Flowing rivers can act as dispersal vectors for plant matter and invertebrates. (from River ecosystem) -
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) -
A pensive Cooplacurripa River, NSW (from River ecosystem) -
Different biofilm components in streams. Principal components are algae and bacteria. (from River ecosystem)
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Did you know?
- ... that the 2010 sockeye salmon run on the Adams River (pictured) in British Columbia, Canada, is expected to be the largest since 1913, with an estimated 9 million fish returning to the river to spawn?
- ... that three swimming holes on Big Wapwallopen Creek are the most dangerous ones in Luzerne County, Pennsylvania?
- ... that the name for the Texas stream Cibolo Creek comes from the Native American and Spanish word for Buffalo, who were hunted along its steep banks?
Related portals
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Topics
| Large-scale features | |
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| Alluvial rivers | |
| Bedrock river | |
| Bedforms | |
| Regional processes | |
| Mechanics | |
2601:247:C400:5E0:B9C2:ADE9:5C57:AF41 (talk) 20:47, 3 December 2024 (UTC)[1]2601:247:C400:5E0:B9C2:ADE9:5C57:AF41 (talk) 20:47, 3 December 2024 (UTC)
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
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 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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