Home
Back
Formula Used:
| From: | To: |
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 granulite facies.
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 granulite facies.
Details: Accurate groundwater recharge estimation is crucial for sustainable water resource management, aquifer replenishment assessment, and planning water supply systems in hard rock regions.
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 rainfall infiltration factor specific to hard rock areas with granulite facies, accounting for local hydrogeological conditions.
Q2: How is the area of computation determined?
A: The area is typically the catchment area where rainfall contributes to groundwater recharge, often determined through hydrological mapping and watershed delineation.
Q3: What time period is considered for normal rainfall?
A: Normal rainfall typically refers to the statistical average measured over a 30-year period during monsoon seasons for the specific region.
Q4: Are there limitations to this calculation method?
A: This method provides an estimate and may need adjustment based on specific local conditions, soil types, and actual infiltration rates.
Q5: How accurate is this recharge estimation method?
A: While useful for preliminary assessments, more detailed hydrological studies may be needed for precise groundwater management planning.