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Portal:Rivers

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The Rivers Portal

Introduction

A boat floats on the Mekong, in Laos

A river is a natural stream of fresh water 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...)

An 1873 map of Queens showing the route of Kissena Creek (blue) and the Central Railroad.

Kissena Creek (also Mill Creek or Ireland Mill Creek) is a buried stream located in the neighborhoods of Flushing, Fresh Meadows, Hillcrest, and Kew Gardens Hills in the New York City borough of Queens. Kissena Creek originates in a now-filled swamp within Kew Gardens Hills and Pomonok in central Queens, flowing east to Hillcrest. The creek then travels mostly north and west, largely flowing beneath Kissena Park Golf Course, Kissena Park, Kissena Corridor Park, and Queens Botanical Garden, before merging with the Flushing River in Flushing Meadows–Corona Park.

The name "Kissena" comes from the Chippewa language term for "it is cold", "cold place", or "cool water". Much of the creek was covered or diverted into sewers in the 20th century, and the only extant above-ground portion of the creek is Kissena Lake in Kissena Park. (Full article...)

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A river is more than an amenity, it is a treasure.
Oliver Wendell Holmes Jr., Speaking About the Delaware River, 1931

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Photograph: Ansel Adams

The Tetons and the Snake River (1942)

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