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Dicken's Formula:
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Dicken's Formula is an empirical equation used to estimate peak flood discharge based on the catchment area. It's particularly useful in regions where detailed hydrological data is not available, with Dicken's Constant typically ranging from 11 to 14 in India.
The calculator uses Dicken's Formula:
Where:
Explanation: The formula provides an empirical relationship between catchment area and peak flood discharge, with the exponent 3/4 representing the non-linear scaling relationship.
Details: Accurate flood discharge estimation is crucial for designing hydraulic structures, floodplain management, disaster preparedness, and infrastructure planning in flood-prone areas.
Tips: Enter Dicken's Constant (typically between 11-14 for Indian conditions) and catchment area in square kilometers. Both values must be positive, with the constant within the recommended range.
Q1: What is the typical range for Dicken's Constant?
A: Dicken's Constant typically ranges from 11 to 14 for Indian conditions, though it may vary for different geographical regions.
Q2: When is Dicken's Formula most appropriate?
A: Dicken's Formula is most appropriate for preliminary flood estimation in areas where detailed hydrological data is not available.
Q3: What are the limitations of Dicken's Formula?
A: The formula doesn't account for rainfall intensity, soil type, slope, or other catchment characteristics that affect flood discharge.
Q4: How accurate is Dicken's Formula?
A: As an empirical formula, it provides rough estimates and should be used with caution for critical infrastructure design.
Q5: Can this formula be used for large catchment areas?
A: Yes, but the accuracy may decrease for very large or very small catchments compared to medium-sized ones.