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The formula calculates the drawdown in well 2 based on the drawdown in well 1, discharge rate, and aquifer constant. It's used in hydrogeology to analyze groundwater flow and well interactions.
The calculator uses the formula:
Where:
Explanation: The formula calculates the difference in drawdown between two wells based on the discharge rate and aquifer transmissibility properties.
Details: Accurate drawdown calculation is crucial for groundwater resource management, well design, and understanding aquifer characteristics and behavior.
Tips: Enter drawdown in well 1 in meters, discharge rate in cubic meters per second, and aquifer constant. All values must be positive numbers.
Q1: What is drawdown in hydrogeology?
A: Drawdown is the reduction in hydraulic head observed at a well in an aquifer, typically due to pumping.
Q2: What does the aquifer constant represent?
A: The aquifer constant (T) represents the coefficient of transmissibility, which indicates the rate at which water is transmitted through a unit width of aquifer under a unit hydraulic gradient.
Q3: When is this formula applicable?
A: This formula is applicable for steady-state flow conditions in confined aquifers with fully penetrating wells.
Q4: What are typical units for aquifer constant?
A: The aquifer constant is typically expressed in m²/day or m²/s, representing the transmissivity of the aquifer.
Q5: Are there limitations to this equation?
A: This equation assumes ideal conditions and may not account for complex aquifer heterogeneity, boundary effects, or time-dependent drawdown changes.