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The Recharge from Rainfall in Hard Rock Low Clay refers to the process of rainwater percolating through hard rock formations with low clay content, replenishing groundwater reservoirs. This calculation is essential for sustainable water resource management in hard rock terrain.
The calculator uses the formula:
Where:
Explanation: The formula calculates the rate of groundwater recharge by multiplying the catchment area by the average monsoon rainfall and applying a recharge coefficient of 11, which accounts for the specific hydrogeological characteristics of hard rock formations with low clay content.
Details: Accurate groundwater recharge estimation is crucial for sustainable water resource management, aquifer replenishment assessment, and planning water supply systems in hard rock terrain with low clay content.
Tips: Enter the catchment area in square meters and normal monsoon rainfall in meters. Both values must be positive numbers for accurate calculation.
Q1: What does the coefficient 11 represent in the formula?
A: The coefficient 11 represents the recharge factor specific to hard rock formations with low clay content, accounting for infiltration rates and geological characteristics.
Q2: How is Normal Rainfall in Monsoon Season determined?
A: Normal Rainfall refers to the statistical average of rainfall measured over a specified period, typically 30 years, during the monsoon months in a given region.
Q3: What types of areas are considered "Hard Rock Low Clay"?
A: These are geological formations with predominantly hard rock substrates (granite, basalt, etc.) containing minimal clay content, which affects water percolation rates.
Q4: Why is this calculation important for water resource management?
A: It helps quantify the amount of water replenishing groundwater reservoirs, which is essential for sustainable water supply planning and preventing over-extraction.
Q5: Are there limitations to this calculation method?
A: The formula provides an estimate and may need adjustment based on local geological variations, land use patterns, and specific hydrogeological conditions.