that part of the mouth or lower course of a river in which the river’s current meets the sea tide.

What is the meaning of the word tributary?

es.tu.ar.y (es-chew-wer-ee), n. 1. that part of the mouth or lower course of a river in which the river's current meets the sea's tide. 2. an arm or inlet of the sea at the lower end of a river. (Random House Unabridged Dictionary, 1993) About Estuaries in Oregon

What are the landforms around a river called?

estuary. [ ĕs ′chōō-ĕr′ē ] The wide lower course of a river where it flows into the sea. Estuaries experience tidal flows and their water is a changing mixture of fresh and salt. An arm of the sea that extends inland to meet the mouth of a river. The American Heritage® Science Dictionary Copyright © 2011.

What is the definition of a river delta?

that part of the mouth or lower course of a river in which the river's current meets the sea's tide; tidal mouth of a large river where the tide meets the stream. remedy something that cures or …

What is the meaning of the word sea bottom?

USA pronunciation. n., pl. -ar•ies. Geography that part of the mouth or lower course of a river in which the river's current meets the sea's tide. Geography an arm or inlet of the sea at the lower …

What area where the mouth of a river meets an ocean?

estuaryAn estuary is an area where a freshwater river or stream meets the ocean. When freshwater and seawater combine, the water becomes brackish, or slightly salty.

What is the arm of the sea at the lower end of a river?

noun, plural es·tu·ar·ies. that part of the mouth or lower course of a river in which the river's current meets the sea's tide. an arm or inlet of the sea at the lower end of a river.

What is the name for the mouth of a river where it meets the ocean and the water is saltwater mixed with freshwater a current B biome C estuary D tide?

Estuaries and their surrounding wetlands are bodies of water usually found where rivers meet the sea. Estuaries are home to unique plant and animal communities that have adapted to brackish water—a mixture of fresh water draining from the land and salty seawater.

What is the name for the mouth of a river where it meets the ocean and the water is saltwater mixed with freshwater?

estuaryBut the mixing of freshwater streams and rivers with salty ocean tides in a partly enclosed body of water—natural scientists call it an estuary—fuels some of the most productive ecosystems on Earth, and also some of the most vulnerable.

What is meant by river mouth?

The place where a river enters a lake, larger river, or the ocean is called its mouth. River mouths are places of much activity. As a river flows, it picks up sediment from the river bed, eroding banks, and debris on the water.

What is the tidal mouth of a large river where the tide meets the stream?

EstuaryEstuary is known as the tidal mouth of a large river. An estuary is an area where a freshwater river or stream meets the ocean.

When the river meets the sea meaning?

Though written for one Christmas story and featured in another, the lyrics are not holiday-related, but symbolic of death as a peaceful transition to an afterlife.

When river meets the sea which of the two main properties of water were affected?

Bodies of water form layers based on differences in density, usually affected most by temperature and salinity. As fresh water from rivers enters an estuary it mixes with saltwater from the sea. What happens to the two different densities of water when they meet? Water will become more dense as its salinity increases.

Why is estuary called nursery of the sea?

Estuaries are often called the “nurseries of the sea,” because so many animals reproduce and spend the early part of their lives there. Salty seawater mixes with fresh water draining from the land to create habitats with unique conditions that are not found elsewhere.

What do you call the area where seawater and the fresh water meet and said to be the home for various kinds of animals?

Estuaries and their surrounding wetlands are bodies of water usually found where rivers meet the sea. Estuaries are home to unique plant and animal communities that have adapted to brackish water—a mixture of fresh water draining from the land and salty seawater.

What is Delta and estuary?

Deltas form at the mouths of rivers that transport enough sediment to build outward. In contrast, estuaries are present where the ocean or lake waters flood up into the river valley. The key difference between the two is where the sediment transported by the river is deposited.

What is the salt wedge?

From Coastal Wiki. Definition of Salt wedge: Seawater intrusion in an estuary as a wedge-shaped bottom layer which hardly mixes with the overlying fresh water layer. Salt wedges occur in estuaries where tidal motion is very weak or absent.

What is the lower part of a river called?

The bed (also called the river bed) is the bottom of the river (or other body of water).

What is the end of a river called?

mouthThis source is called a headwater. The headwater can come from rainfall or snowmelt in mountains, but it can also bubble up from groundwater or form at the edge of a lake or large pond. The other end of a river is called its mouth, where water empties into a larger body of water, such as a lake or ocean.

Is the sea the end of a river?

Eventually a river meets the sea and the place where it does is called the mouth. The last of the mud is deposited at the river's mouth. A wide mouth is called an estuary.

Where do rivers end?

The end of a river is its mouth, or delta. At a river's delta, the land flattens out and the water loses speed, spreading into a fan shape. Usually this happens when the river meets an ocean, lake, or wetland.

What river runs south of Salmon River?

South of the Salmon River are the Siletz Bay, Depoe Bay, Yaquina Bay, Alsea Bay, Siuslaw River, Umpqua River, Coos Bay, and Coquille River estuaries. The watersheds of these estuaries are moderate in size, except for tiny Depoe Bay and the much larger Umpqua system, which rises in the southern Oregon Cascades near Crater Lake and cuts through ...

What is the meaning of "inlet" in a river?

1. that part of the mouth or lower course of a river in which the river's current meets the sea's tide. 2. an arm or inlet of the sea at the lower end of a river. (Random House Unabridged Dictionary, 1993)

Which estuaries are located on the north coast of Oregon?

Other estuaries of the north coast-the Necanicum River, Netarts Bay, Sand Lake, Nestucca Bay, and Salmon River-are small and drain smaller watersheds. Netarts Bay and Sand Lake, with very small watersheds and limited freshwater input, ...

What is the Columbia River Estuary?

The Columbia River estuary, with more than 80,000 acres of surface area in Oregon alone, is larger than all of the other Oregon estuaries put together. Draining one of the largest river basins in North America (259,000 square miles), the Columbia's estuary is dominated by the river's freshwater inflow. Although the head of tide extends 146 miles upstream to Bonneville Dam, traces of salt water rarely are found above River Mile 30, even at low flow. The freshwater nature of this estuary makes it very different from the smaller estuaries to the south. For example, of the more than 10,000 acres of Columbia estuary tidal marsh, only a small fraction is salt marsh. The rest are freshwater tidal wetlands.#N#From the Columbia River south to the Salmon River, the coastal mountains are a complex mix of sedimentary and volcanic rocks. Two estuaries-Nehalem Bay and Tillamook Bay are relatively large by Oregon standards and have large watersheds. Other estuaries of the north coast-the Necanicum River, Netarts Bay, Sand Lake, Nestucca Bay, and Salmon River-are small and drain smaller watersheds. Netarts Bay and Sand Lake, with very small watersheds and limited freshwater input, essentially are saltwater lagoons.#N#South of the Salmon River are the Siletz Bay, Depoe Bay, Yaquina Bay, Alsea Bay, Siuslaw River, Umpqua River, Coos Bay, and Coquille River estuaries. The watersheds of these estuaries are moderate in size, except for tiny Depoe Bay and the much larger Umpqua system, which rises in the southern Oregon Cascades near Crater Lake and cuts through the Coast Range. These estuaries have large areas of salt marsh, eelgrass, and tidal flat habitat. The head of tide extends far upriver-41 miles on the Coquille, for example.#N#Along this part of the coast, the mountains are mostly older marine sediments and sands and clays eroded from ancient mountains to the south and east. These materials subsequently were folded and uplifted to form the Coast Range. Estuaries formed as sea level rose after the last ice age, drowning river valleys and stabilizing at roughly the present level about 6,000 years ago.

Is the Columbia River salt marsh?

The freshwater nature of this estuary makes it very different from the smaller estuaries to the south. For example, of the more than 10,000 acres of Columbia estuary tidal marsh, only a small fraction is salt marsh. The rest are freshwater tidal wetlands. From the Columbia River south to the Salmon River, the coastal mountains are a complex mix ...

How to use estuary in a sentence

The bulk of estuarial silt comes down the main river from the upper Basin.

Scientific definitions for estuary

The wide lower course of a river where it flows into the sea. Estuaries experience tidal flows and their water is a changing mixture of fresh and salt.

Cultural definitions for estuary

A wide body of water formed where a large river meets the sea. It contains both fresh and salt water.

What is the wide part of a river where it nears the sea?

1. estuary- the wide part of a river where it nears the sea; fresh and salt water mix. body of water, water- the part of the earth's surface covered with water (such as a river or lake or ocean); "they invaded our territorial waters"; "they were sitting by the water's edge".

What is the meaning of "tide"?

1. that part of the mouth or lower course of a river in which the river's current meets the sea's tide. 2. an arm or inlet of the sea at the lower end of a river. [1530–40; < Latin aestuāriuminlet, estuary =aestu(s)tide, surge (literally, heat; see estival) + -ārium-ary] es`tu•ar′i•al(-ˈɛər i əl) adj. .

What is a broad, low, river mouth?

A broad, low, river mouth, usually where the coast has sunk or the sea level has risen.

What is the sense of a backwater?

One had the sense of a backwater, or rather of an estuary, whose waters flowed in from the invisible sea, and ebbed into a profound silence while the waves without were still beating.

What is a firth?

firth- a long narrow estuary (especially in Scotland)

What is the definition of estuary?

The part of the wide lower course of a river where its current is met by the tides. 2. An arm of the sea that extends inland to meet... Estuary - definition of estuary by The Free Dictionary. https://www.thefreedictionary.com/estuary.

What is an estuary?

estuary synonyms, estuary pronunciation, estuary translation, English dictionary definition of estuary. n. pl. es·tu·ar·ies 1. The part of the wide lower course of a river where its current is met by the tides. 2.

What is the name of the land around the mouth of a river?

Arcuate or fan-shaped - the land around the river mouth arches out into the sea and the river splits many times on the way to the sea, creating a fan effect.

What are the features of a lower course river?

Lower course features. In the lower course, the river has a high volume and a large discharge. The river channel is now deep and wide and the landscape around it is flat. However, as a river reaches the end of its journey, energy levels are low and deposition takes place.

What is a floodplain?

Floodplains. The river now has a wide floodplain. A floodplain is the area around a river that is covered in times of flood. A floodplain is a very fertile area due to the rich alluvium deposited by floodwaters. This makes floodplains a good place for agriculture.

What are the landforms of rivers?

River landforms can be divided into upper, middle and lower course features. These include steep V-shaped valleys, oxbow lakes and flood plains, respectively.

Where are deltas found?

Deltas are found at the mouth of large rivers - for example, the Mississippi. A delta is formed when the river deposits its material faster than the sea can remove it. There are three main types of delta, named after the shape they create.