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محیط زیست و منابع طبیعی::
هیدروگراف سیل
A flood prevention plan first needs to adopt a flood hydrograph (hereinafter referred to as design flood).
However, a flood hydrograph itself is not necessarily useful for calculating the occurrence probability.
In many cases, a flood hydrograph, as used for statistical analysis from peak flow or total volume, presents difficulties such as a lack of precision because of data shortages, and the need for complex calculations.
While a number of flood hydrographs may be calculated using a flood runoff model based on the subject rainfall, the hydrograph that is used as the basis of the flood prevention plan represents the "design flood".
Since the design flood serves as the basis for the flood prevention plan, the flood hydrograph must be one that has not been affected by any artificial manipulation such as flood control.
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