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What is the difference between hydrograph and Hyetograph?
As nouns the difference between hyetograph and hydrograph is that hyetograph is a graphical representation of rainfall over time while hydrograph is a graph of flow past a point in a river versus time.
What are Hydrographs used for?
In its simplest form, a hydrograph is a graphical representation of runoff rate against time (Figure 1). It shows the time distribution of runoff at the point of measurement or computation, reflecting the complex characteristics of the watershed by a single curve.
What is meant by hydrograph?
Definition of hydrograph 1 : a mechanism for recording on a chart the changing level of water (as in a well, reservoir, stream)
What does a hyetograph display?
A hyetograph is a graphical representation of the distribution of rainfall intensity over time.
What is effective rainfall hyetograph?
Effective rainfall – sometimes called excess rainfall – is the component of the storm hyetograph which is neither retained on the land surface nor which infiltrates into the soil. The effective rainfall produces overland flow that results in the direct runoff hydrograph from a sub-area of a catchment.
Why do hydrographs differ?
The shape of a hydrograph is altered by a few different things. One factor is the shape of the drainage basin. Drainage basins come in a wide assortment of shapes. Basins with steep slopes will have a high peak discharge and a short lag time because the water can travel faster downhill.
Does it have to be raining for a river to flood?
Does it have to be raining for a river to flood? A. Yes. Only the rain that falls into the river fills it up and causes it to overflow.
How do you spell hydrograph?
a graph of the water level or rate of flow of a body of water as a function of time, showing the seasonal change.
What is unit of hydrograph?
Unit hydrograph is a direct runoff hydrograph resulting from one unit (one inch or one cm) of constant intensity uniform rainfall occurring over the entire watershed. The role of unit hydrograph in hydrology is to provide an estimate of direct runoff hydrograph resulting from given excess rainfall hyetograph.