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The stream velocity required to carry the smallest boulders is typically around 1 meter per second. This velocity is based on the sediment transport capacity of the stream, which is influenced by factors such as the size and weight of the boulders, as well as the stream's gradient and flow rate.
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What affects stream erosion?
Stream erosion can be influenced by factors such as the volume and speed of water flow, gradient of the stream channel, presence of sediment or boulders, vegetation along the banks, and geology of the area. Human activities such as deforestation, urbanization, and construction of dams or levees can also significantly impact stream erosion.
What is stream velocity?
Stream velocity refers to the speed at which water flows in a stream or river. It is typically measured in meters per second or feet per second and can vary depending on factors such as channel geometry, slope, and discharge. Stream velocity is an important parameter in hydrology and river engineering for understanding water movement and erosion processes.
What is the measure of th largest particles a stream can carry?
The measure of the largest particles that a stream can carry is typically determined by its stream power, bed material size, and flow velocity. Streams with higher stream power and flow velocity are able to transport larger particles. The largest particles a stream can carry before they settle to the streambed are usually referred to as the stream's "bedload" particles.
What are two factors that determine the rate of stream erosion?
Two factors that determine the rate of stream erosion are the velocity of the water and the amount of sediment carried by the stream. Higher velocity and increased sediment load tend to enhance erosion by allowing the stream to transport more material and exert greater cutting force on the streambed.
Which change at a particular location in a stream usually causes more sediments to be deposited at a location?
A decrease in water velocity usually causes more sediments to be deposited at a location in a stream. This can happen when the stream widens, the channel gradient decreases, or obstacles such as rocks or vegetation slow down the flow of water.
What is the minimum water velocity needed in a stream to maintain the transportation of the smallest boulder?
The minimum water velocity needed to transport the smallest boulder is determined by the critical threshold velocity. This velocity is influenced by factors such as the size, shape, and weight of the boulder. In general, for very small boulders, velocities in the range of 0.5 to 1.0 meters per second are often sufficient to initiate transport.
Which groups of particles sizes can be transported by a stream that has a velocity equal to 20 cms?
A stream with a velocity of 20 cm/s can transport particles up to fine sand size (0.0625 - 2 mm). Larger particles such as gravel and boulders would require a faster flow velocity to be transported.
What pebbles and boulders carried in a stream called?
load or stream load.
What is a current meter?
it is an instrument to determine the velocity of flow at required point in a flowing stream.
What is the slowest stream velocity needed to maintain 001 cm particles downstream?
To prevent particles of 0.01 cm from settling downstream, a minimum stream velocity of 0.02 m/s is required, based on Stokes' law calculations for settling velocity.
What is an instrment commonly used for measurement of velocity of stream?
A stream gauge is the instrument which is commonly used for the measurement of velocity stream.
Stream gradient role on stream velocity?
Stream gradient, or the slope of the stream channel, affects stream velocity by influencing the speed at which water flows downstream. A steeper stream gradient typically results in a faster water flow velocity, as the force of gravity pulls water downhill more strongly. Conversely, a gentler stream gradient leads to slower water flow velocity.
Why do boulders become smaller as they are moved down a stream bed?
sediment
How does the velocity of a stream effect its carring capacity?
The higher the velocity of the stream the larger carrying capacity it has.
What affects stream erosion?
Stream erosion can be influenced by factors such as the volume and speed of water flow, gradient of the stream channel, presence of sediment or boulders, vegetation along the banks, and geology of the area. Human activities such as deforestation, urbanization, and construction of dams or levees can also significantly impact stream erosion.
What are bed loads in a stream?
the sand, gravel, boulders, or other debris transported by rolling or sliding along the bot-tom of a stream.
What is the difference between stream discharge and stream velocity?
Stream discharge is a product of the velocity and the area of the stream (velocity x width x depth), and has units of volume per time (e.g. cubic feet per second, cubic meter per day, etc). Stream velocity is the vector describing the speed of the water and has units of length per time (feet per second, meter per second). Stream discharge is relatively constant as you move up and down a stream, while velocity will change predominately as you change depth. The velocity of water is lowest near the bed of the stream, and highest at the surface.
