What are crests in water?
The highest surface part of a wave is called the crest, and the lowest part is the trough. The vertical distance between the crest and the trough is the wave height.
What does lake Crest mean?
Crest: A term used to explain a water level that has reached the highest point it is expected to go. After a river or lake crests, the water will begin to decrease in the coming days.
How is river crest determined?
Gauges along the river record the level of the water, and the highest level recorded at each gauge will be the crest for that gauge. Observers generally know that cresting is occurring when the water level stops rising and becomes stable.
Why do rivers crest after a storm?
By the time the route — or the river — reaches the end of its destination, it has a lot of cars — or water — piled up. At that point, it crests. It can take days for rivers to crest, since the water from tributaries is slowly accumulating and flowing downstream.
What is a crest in geography?
noun. the highest part of a hill or mountain range; summit. the head or top of anything. a ridge or ridgelike formation. the foamy top of a wave.
What is the meaning of crest and trough?
A crest point on a wave is the maximum value of upward displacement within a cycle. A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle.
Is Lake a Scottish name?
The name Lake is of Anglo-Saxon origin and came from when the family lived beside or close to a lake. The surname Lake originally derived from the Old English word lacu which meant lake.
What country does the last name lake come from?
The Lake family name was found in the USA, the UK, Canada, and Scotland between 1840 and 1920. The most Lake families were found in USA in 1880. In 1911 there were 546 Lake families living in Ontario. This was about 55% of all the recorded Lake's in Canada.
What are crest gauges used for?
Crest-stage gages are used to determine the elevation of a peak stage occurring at a specific location in a stream. A crest-stage gage consists of a length of 14-inch diameter pipe installed in a vertical position in the stream channel (figure 1).
What is a crest-stage gage?
The metal pipe bolted to the side of the bridge in this picture is a crest-stage gage. It is a low-tech device made of solely of a metal pipe, a wooden pole, and crushed cork that is invaluable to providing a one-time measurement of the maximum height (stage) that a stream hits during a high-water event.
Why does a river still have water in it after weeks without rain?
Why do rivers continue to flow, even when little or no rain has fallen? Much of the water feeding a stream runs slowly underground through shallow aquifers. These sediments are saturated like natural sponges and respond slowly to rainfall and drought.
What causes rivers to rise?
Rainfall causes rivers to rise, and a river can even rise if it only rains very far up in the watershed – remember that water that falls in a watershed will eventually drain by the outflow point.
What is a crest answer?
A crest is a point on a surface wave where the displacement of the medium is at a maximum. A trough is the opposite of a crest, so the minimum or lowest point in a cycle. Was this answer helpful?
What is an example of a crest?
The definition of a crest is something that is located at the top of something or someone or a symbol of a family name. An example of crest is the comb on a rooster's head. An example of crest is Mount Lyell in Yosemite. An example of crest is feathers in the top of a medieval helmet.
What trough means?
Definition of trough 1a : a long shallow often V-shaped receptacle for the drinking water or feed of domestic animals. b : any of various domestic or industrial containers. 2a : a conduit, drain, or channel for water especially : a gutter along the eaves of a building.
What is the Scottish name for baby?
Bairn is a Northern English, Scottish English and Scots term for a child. It originated in Old English as "bearn", becoming restricted to Scotland and the North of England c.
What was Scotland first name?
The Scots- and Irish-Gaelic name for Scotland, Alba, derives from the same Celtic root as the name Albion, which properly designates the entire island of Great Britain but, by implication as used by foreigners, sometimes the country of England, Scotland's southern neighbour which covers the largest portion of the …
What is the name Lake short for?
Popularity:2755. Meaning:Body of water. Lake is a gender-neutral name of British origin, relating to a body of water. The name Lake dates back to the Anglo-Saxon period and is derived from the Old English word lacu.
What does Lane mean as a name?
a small roadway or path The name Lane is a gender-neutral name of English origin meaning "a small roadway or path." It was originally a surname and invokes images of tree lined, country path.
What is crest level?
A "crest" is the level at which a river peaks before it goes down. Forecasters may issue a "rise to" prediction if they're not yet sure how high a river will crest. "Rise to" means the river is expected to reach a certain level but could crest at an even higher level later on.
What is a crest stage gage?
The metal pipe bolted to the side of the bridge in this picture is a crest-stage gage. It is a low-tech device made of solely of a metal pipe, a wooden pole, and crushed cork that is invaluable to providing a one-time measurement of the maximum height (stage) that a stream hits during a high-water event.
What is the stage of a river and where is it measured?
"Stage" is the water level above some arbitrary point in the river and is commonly measured in feet. For example, on a normal day when no rain has fallen for a while, a river might have a stage of 2 feet. If a big storm hits, the river stage could rise to 15 or 20 feet, sometimes very quickly.
What is a river without water called?
In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill.
How does a river never run out of water?
Why do rivers continue to flow, even when little or no rain has fallen? Much of the water feeding a stream runs slowly underground through shallow aquifers. These sediments are saturated like natural sponges and respond slowly to rainfall and drought.
What is the end of a river called?
mouth This 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.
What is the start of a river called?
headwaters The place where a river begins is called its source. River sources are also called headwaters. Rivers often get their water from many tributaries, or smaller streams, that join together.
What is called crest?
As a verb, crest means "to reach the top" like when you crest a mountain. Definitions of crest. the top or extreme point of something (usually a mountain or hill) synonyms: crown, peak, summit, tip, top. types: brow, hilltop.
What is crest in geography?
noun. the highest part of a hill or mountain range; summit. the head or top of anything. a ridge or ridgelike formation. the foamy top of a wave.
What are peaks and troughs?
Peaks and troughs are the highest and lowest concentrations, respectively, of a medication in an individual's body. They are used to determine dosing intervals, especially during therapeutic drug monitoring.
What is a trough in geography?
A trough is an elongated area of relatively low pressure extending from the center of a region of low pressure. Air in a high pressure area compresses and warms as it descends.