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A hydrograph and a hyetograph are both graphs that show changes over time, but they represent different types of data.
Hydrograph
A graph that shows the discharge of a stream or river at a specific point over time. Discharge is the rate of flow, usually measured in cubic meters or cubic feet per second (cms or cfs). Hydrographs can be used to make long-term flood risk forecasts.
Hyetograph
A graph that shows the amount of water input, such as precipitation or snowmelt, at a specific point over time. Hyetographs can also show rainfall intensity over time.
Hyetographs can sometimes be shown on the secondary x- and y-axis of a hydrograph to compare the stream's response to the water input.
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What is the difference between LIM and LTR?
Like Lim, LTR is ‘Post Shipment Import Trade finance’ given by the Bank to the Importer. Difference is, in Lim, the possession of the released goods remains under bank’s control but in LTR, the Goods remains with the Importer. But he is holding the goods not as their owner but as an agent for the Bank
How do you calculate the lagtime of a hydrograph?
To calculate the lag time of a hydrograph, you first identify the peak discharge point on the hydrograph and then locate the corresponding point where the rainfall event begins. The lag time is the time difference between the start of the rainfall and the peak discharge, typically measured in hours. This value helps in understanding the response of a watershed to precipitation events.
How do you work out lag time on a hydrograph?
the time between the heaviest rainfall and the peak discharge
The unit of hydrograph for an infinitesimally small during of effective rainfall is called?
The unit of hydrograph for an infinitesimally small duration of effective rainfall is called unit hydrograph. It represents the response of a watershed to a unit input of effective rainfall over time.
Why does lag time occur in a storm Hydrograph?
Lag time in a storm hydrograph occurs due to the time it takes for precipitation to travel through the watershed to reach the measuring point, such as a river or stream. Factors influencing lag time include the size and shape of the watershed, land use, soil saturation, and infiltration rates. Additionally, delays in surface runoff and subsurface flow contribute to the time difference between peak rainfall and peak discharge. Overall, these factors create a delay that is reflected in the hydrograph's shape and timing.
What is a flood hydrograph?
A hydrograph is showing the discharge (rate of flow) versus the time past in a specific river point. One of the types of hydrography is called a flood hydrograph, it is used to measure the river's characteristic basically a dual plot of discharge and rainfalls.
What is stage hydrograph?
A stage hydrograph is a graphical representation that illustrates the relationship between water stage (the height of the water surface) and time at a specific location, typically along a river or stream. It displays variations in water levels due to factors such as precipitation, snowmelt, and upstream flow. The hydrograph helps hydrologists and water resource managers analyze flood events, assess river health, and manage water resources effectively.
How do you contrast a storm hydrograph?
how do you compare and contrast hydrographs
What is hydrograph lag time?
Hydrograph lag time refers to the delay between the peak rainfall event and the peak discharge observed in a river or stream, as depicted on a hydrograph. This lag time is influenced by various factors, including the characteristics of the watershed, land use, soil saturation, and the nature of the rainfall itself. It is an important parameter for understanding flood dynamics and managing water resources, as it helps predict how quickly runoff will reach waterways after precipitation events.
What is does a hydrograph show?
the amount of discharge in a river over a period of time
What affects the shape of a storm hydrograph?
The shape of a storm hydrograph is influenced by factors such as precipitation intensity, duration, and distribution, as well as the characteristics of the watershed such as size, slope, soil type, land use, and vegetation cover. These factors determine how quickly water enters the river system and how quickly it moves through it, ultimately shaping the hydrograph.
What is the flood routing types?
IS the technique of determining flood hydrograph at a section of river
What is Rainfall Peak?
The peak rainfall is the highest amount of rain in a place on a hydrograph.
