How do you measure river discharge? Measuring Discharge
Discharge is the volume of water moving down a waterway per unit of time. It is most commonly expressed in cubic feet per seconds or gallons per day. To calculate discharge, multiply the area of water in a channel cross section by the average velocity of water in that cross section.
Nevertheless, Which of the following is used for measurement of discharge of water in river or stream?
Explanation: Current meter: It is a device used for measuring the speed of flow in a watercourse.
At same time, Which of the following may be used for measurement of discharge of water in rivers or streams notches orifices Weir Venturimeter?
In this way, Which is the device used to measure discharge through river?
The BoogieDopp: A New Instrument for Measuring Discharge in Small Rivers and Channels. The BoogieDopp is a new instrument for measuring discharge in small rivers, streams and channels. It consists of an Aquadopp Current Profiler mounted on a 1-m long boat (made by OceanScience) that looks like a boogie board.
How is discharge measured?
Discharge = V x D x W
If length is measured in feet and time in seconds, Discharge has units of feet3/sec or cubic feet per second (cfs). Depth times Width gives the cross-sectional area.
Related Question for How Do You Measure River Discharge?
What is used to measure water?
A water meter is measures the quantity (volume) of water that passes through a pipe or other outlet. Typically, meters use a standard unit of measure for volume, such as cubic feet or gallons. Your meter works like a car odometer, recording the cumulative amount of water that has passed through the meter.
Which of the following device is used to measure discharge?
Detailed Solution. Venturi meter is a device which measures the flow rate of fluid through the pipe. It can be used in any position.
Which of the following may be used for measuring the rate of flow of water in rivers?
Answer: The current meter is used for measuring the rate of flow of water in rivers or streams.
Which of the following may be used for measuring the rate of flow of water in rivers of streams Mcq?
Weirs are commonly used to measure or regulate flow in rivers, streams, irrigation canals, etc. Installing a weir in an open channel system causes critical depth to form over the weir. Since there is a unique relationship between the critical depth and discharge, a weir can be designed as a flow-measuring device.
How a weir is used to measure flow discharge?
Weirs to Measure Flow
It works by raising the water level upstream of the weir, and then forcing the water to spill over. The more water is flowing over the weir, the deeper the water will be upstream of the weir. So measuring flow rate (CFS) can be done by simply measuring the depth of the water upstream.
Is a device used for measuring the rate of Flowof liquid through a small Chanal?
Explanation: Notch is a device used for measuring the rate of flow of a liquid through a small channel or a tank.
Which instrument is used to measure the flow of water?
A water flow meter is an instrument capable of measuring the amount of water passing through a pipe.
Which of the following instrument is most suitable for measuring discharge of a river?
Price's current meter: For measuring discharge or velocity of a streamflow current meter is used. In this, the stream channel cross-section is divided into numerous vertical subsections.
Why do we measure discharge?
This is one reason for measuring flow - to work out the load of contaminants and sediment the waterway is carrying. Because discharge can have a significant effect on water quality, it is important that it is recorded at the time of sampling and, if possible, during the previous few days.
What is manometer used to measure?
A manometer is an instrument used to measure and indicate pressure. There are two types of manometers, analog and digital. Inches of water column is the most common form of measurement in the HVAC industry when measuring static or gas pressure, although other units of measure are available and used worldwide.
What method is best to measure discharge?
The Price Type AA meter (Figures 39) is the most common vertical shaft meter and is often considered the standard for discharge measurement. It has been subjected to extensive research and experimentation and shown to be well suited to a wide variety of field conditions.
What is a water discharge?
In hydrology, discharge is the volumetric flow rate of water that is transported through a given cross-sectional area. It includes any suspended solids (e.g. sediment), dissolved chemicals (e.g. CaCO3(aq)), or biologic material (e.g. diatoms) in addition to the water itself.
What is river discharge?
'River discharge' is the volume of water flowing through a river channel; measured at any given point in cubic metres per second.
Which of the following units is used for measuring the turbidity of water?
Turbidity is usually measured in nephelometric turbidity units (NTU) or Jackson turbidity units (JTLJ), depending on the method used for measurement. The two units are roughly equal.
Which of the following devices are used to measure the velocity?
Explanation: Pitot Tube is a device that is used to measure velocity at a particular point.
Is used to measure liquid flow?
A Pitot-tube is used to measure fluid flow velocity. The tube is pointed into the flow and the difference between the stagnation pressure at the tip of the probe and the static pressure at its side is measured, yielding the dynamic pressure from which the fluid velocity is calculated using Bernoulli's equation.
What is Venturimeter used for?
A venturi meter is also called a venturi flowmeter. It is used to calculate the velocity of fluids in running through a pipeline. The fluid may be a liquid or a gas. The meter consists of a pipe with a narrowing throat that expands back to it's original diameter on the other side of the choke point.
How do you measure the velocity of a river using a flow meter?
What is the use of current meter?
The instrument is used for the accurate determination of the current velocity in water ways, channels, rivers and the sea. The meter can also be applied in polluted water currents. The measurements are executed with the propeller mounted on the rod(s) or connected to a cable.
Which of the following devices can be used in marine survey Mcq?
Which of the following devices can be used in marine survey? Explanation: The marine survey involves certain high technological devices like, RMS digital multi-meter, bore scopes, ultrasonic testing instruments and thermo-imaging camera.
Which of the following will be used in case of reconnaissance survey?
Which of the following will be used in case of a reconnaissance survey? Explanation: Reconnaissance survey involves studying of the area whether it may be road or air field the output of this survey will determine the feasibility of the land.
Which of the following equipment is used in stream gorge Mcq?
5. Which of the following equipment is used in stream gauge? Explanation: Stream gauge involves the usage of cable ways and stilling well. Cable ways are used for suspending a current meter whereas, stilling well is used to provide calm water level.
How do you measure water in a weir?
The Length is the bottom width of the weir. The height is measured from the bottom of the weir opening to the top of the water level ponded behind the weir (not the water level right as it leaves the weir).
What is a weir used for?
Weirs are fixed barriers across a river or stream that force water to flow over their tops, where the height of the water above the weir can be used to calculate flow.
What is weir length in distillation column?
The outlet weir height typically is 51 mm, this is the height that has been used in obtaining most of the FRI data with the trays with downcomer. In vacuum distillation, operating in the spray regime, typical weir height is 0 to 25 mm, while absorbers and strippers may use 102 mm weir height(1).
Which of the following devices is used for the measurement of liquid flow through a channel?
Venturimeter and orifice meter are directly used to measure the discharge of the flow through the pipes.
Which of the following is used to measure pressure through pipes?
The simplest method of measuring the pressure of a fluid in a pipe is to use a piezometer ("pressure measuring") tube.
Which of the following is used for measuring gas flow?
A flow meter is a precision instrument that measures gas flow rate (or liquid flow) in a pipe.
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