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The Rainfall Recharge in Hard Rock Granulite Facies is a process by which precipitation infiltrates through the surface and percolates into the subsurface of regions by hard rock granulite formations. It is crucial for managing groundwater resources in these specific geological formations.
The calculator uses the formula:
Where:
Explanation: The formula calculates the amount of water that infiltrates through hard rock granulite formations during monsoon season, using a coefficient of 5 that represents the specific recharge characteristics of these geological formations.
Details: Accurate rainfall recharge estimation is crucial for sustainable groundwater management, water resource planning, and understanding the water balance in hard rock granulite facies regions. It helps in assessing the potential for groundwater extraction and maintaining aquifer sustainability.
Tips: Enter the area of computation in square meters and normal rainfall in meters during monsoon season. Both values must be positive numbers to get valid results.
Q1: What is the significance of the coefficient 5 in the formula?
A: The coefficient 5 represents the specific recharge characteristics and infiltration rates typical for hard rock granulite facies formations, derived from empirical studies and hydrological observations.
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 Granulite Facies?
A: These are geological formations characterized by granulite metamorphic rocks, typically found in Precambrian shield areas with specific hydrological properties that affect water infiltration and recharge.
Q4: Are there limitations to this calculation method?
A: The formula provides an estimate and may need adjustment based on local conditions, soil types, vegetation cover, and specific geological variations within granulite facies.
Q5: How often should recharge calculations be updated?
A: Recharge calculations should be updated regularly, especially when there are significant changes in land use patterns, rainfall patterns, or when new hydrological data becomes available.