Of the various empirical formulae relating the flood peak to the catch...
Dickens formula is used in the Central and Northern parts of the country. Ryves formula is used in Tamil Nadu and parts of Karnataka and Andhra Pradesh. Inglish formula is used in Western Ghats in Maharashtra.
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Of the various empirical formulae relating the flood peak to the catch...
Dickens formula is in use in a large part of North India. The Dickens formula is one of the empirical formulae that relate the flood peak to the catchment area. It is specifically used in the northern region of India. Let's break down the answer in detail:
Explanation:
1. Empirical Formulae: Empirical formulae are mathematical equations that are derived based on observed relationships between flood peaks and catchment areas. These formulae are used to estimate the flood peak for a given catchment area.
2. Relationship between Flood Peak and Catchment Area: The flood peak is the maximum discharge during a flood event, while the catchment area is the area of land that contributes water to a specific location. There is a correlation between the flood peak and the catchment area, as a larger catchment area generally results in a higher flood peak.
3. Ryves Formula: Ryves formula is one of the empirical formulae used to estimate the flood peak based on the catchment area. However, it is not mentioned in the given options that Ryves formula is used all over the country.
4. Dickens Formula: The Dickens formula is another empirical formula used to estimate the flood peak based on the catchment area. According to the given options, Dickens formula is in use in a large part of North India.
5. Use of Dickens Formula in North India: North India is prone to flooding due to the presence of major rivers like the Ganges, Yamuna, and Brahmaputra. These rivers have large catchment areas, and estimating the flood peak accurately is crucial for flood management and infrastructure planning. Therefore, the use of the Dickens formula in a large part of North India can help in predicting flood peaks and taking appropriate measures to mitigate the impacts of floods.
In conclusion, the correct answer is option D, which states that the Dickens formula is in use in a large part of North India. This formula is utilized to estimate the flood peak based on the catchment area, and its application is particularly significant in flood-prone regions like North India.