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The Possible Recharge calculation estimates the potential water recharge in hard rock areas with karstified limestone, considering water level fluctuations, watershed area, and gross water draft. It helps in assessing groundwater potential and sustainable water management.
The calculator uses the formula:
Where:
Explanation: The formula calculates the maximum possible recharge by considering the product of water level fluctuation and watershed area, adjusted by a factor of 15, then subtracting the gross water draft.
Details: Accurate recharge estimation is crucial for sustainable groundwater management, determining water availability, and planning water resource development in hard rock areas with karstified limestone formations.
Tips: Enter water level fluctuation in meters, watershed area in square meters, and gross water draft in cubic meters per second. All values must be positive numbers.
Q1: What is the significance of the 15 factor in the formula?
A: The factor 15 represents the maximum specific yield coefficient for karstified limestone formations in hard rock areas.
Q2: How accurate is this calculation method?
A: This method provides a good estimate for preliminary assessments, but site-specific geological conditions may require more detailed analysis.
Q3: What are typical values for water level fluctuation?
A: Water level fluctuation typically ranges from 2-10 meters depending on seasonal variations and geological conditions.
Q4: Can this formula be used for other geological formations?
A: This formula is specifically designed for hard rock areas with karstified limestone. Different coefficients may be needed for other formations.
Q5: How often should recharge calculations be performed?
A: Recharge calculations should be performed annually or whenever significant changes occur in water usage patterns or climatic conditions.