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Flow Discharge Formula:
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Flow Discharge refers to the volume of water passing through a particular cross-section of a river or stream per unit of time. It is typically measured in cubic meters per second (m³/s) or cubic feet per second (cfs). This calculation is essential for understanding groundwater flow and well performance.
The calculator uses the flow discharge formula:
Where:
Explanation: The equation calculates the flow discharge by multiplying the proportionality constant (representing discharge per unit drawdown) by the depression head.
Details: Accurate flow discharge calculation is crucial for groundwater resource management, well design, aquifer testing, and determining the sustainable yield of water wells.
Tips: Enter the proportionality constant and depression head values. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is the Proportionality Constant (K0)?
A: The Proportionality Constant represents characteristics of the aquifer and the area of the well. It indicates discharge per unit drawdown and is also called the specific capacity of the well.
Q2: How is Depression Head measured?
A: Depression Head is measured as the height of the bottom of a well above a reference datum, typically in meters.
Q3: What are typical units for Flow Discharge?
A: Flow Discharge is typically measured in cubic meters per second (m³/s) for metric units or cubic feet per second (cfs) for imperial units.
Q4: When is this calculation most useful?
A: This calculation is essential for hydrogeologists and engineers when designing water supply systems, conducting aquifer tests, and managing groundwater resources.
Q5: Are there limitations to this equation?
A: This simplified equation assumes ideal conditions and may need adjustments for complex aquifer systems, varying well conditions, or non-linear flow relationships.