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Q: How do you calculate the lagtime of a hydrograph?
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How do you find the lagtime of an earthquake?

To find the lagtime of an earthquake, subtract the origin time of the earthquake from the arrival time of the seismic waves at a specific location. This lagtime represents the delay between the earthquake occurrence and the arrival of seismic waves at that location. The lagtime is a crucial parameter for determining the distance of the earthquake epicenter from the recording station.


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.


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.


How do you contrast a storm hydrograph?

how do you compare and contrast hydrographs


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 Rainfall Peak?

The peak rainfall is the highest amount of rain in a place on a hydrograph.


What is the flood routing types?

IS the technique of determining flood hydrograph at a section of river


How do you calculate peak flow?

Use those speacial reading graphs You should have a hydrograph to look at. Look at the curve on this graph, the highest point on this curve is the peak flow. It cannot be calculated, just read off a graph. Peak Flow = Tidal Volume x 60 / I-time


How do you work out lag time on a hydrograph?

the time between the heaviest rainfall and the peak discharge


On a hydrograph what does the area under the curve equal?

Total Volume of rainfall for that storm event


How do you calculate area under the hydrograph curve without integrating?

Basically this isn't possible. Whenever you have an irregular curve, you need some kind of integration technique to get the area, or an estimate of the area. This can be quite simple, at least in principle: just approximate the area by narrow rectangles, calculate the area of each rectangle, and add everything up.