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The Recharge from Rainfall in Hard Rock Areas refers to the process where rainwater infiltrates soil and percolates down to replenish groundwater reserves in regions characterized by hard rock formations with weathered basalt. This is particularly important for managing groundwater resources in areas with specific geological conditions.
The calculator uses the formula:
Where:
Explanation: The formula calculates groundwater recharge by multiplying the catchment area by the normal monsoon rainfall and a factor of 6, which accounts for specific hydrogeological conditions in hard rock areas with weathered basalt.
Details: Accurate calculation of groundwater recharge is crucial for sustainable water resource management, especially in hard rock areas where water storage capacity is limited and recharge rates are critical for maintaining groundwater levels.
Tips: Enter the area of computation for recharge in square meters and normal rainfall in monsoon season in meters. All values must be positive numbers.
Q1: What is the significance of the factor 6 in the formula?
A: The factor 6 represents the specific recharge coefficient for hard rock areas with weathered basalt, 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 areas are considered "Hard Rock Areas with Weathered Basalt"?
A: These are regions with basaltic rock formations that have undergone weathering processes, creating specific hydrogeological conditions that affect water infiltration and storage.
Q4: Are there limitations to this calculation method?
A: This method provides an estimate and may need adjustment based on local conditions, soil types, and actual infiltration rates observed in specific areas.
Q5: How often should recharge calculations be performed?
A: Regular calculations are recommended, especially before and after monsoon seasons, to monitor groundwater replenishment and inform water management decisions.