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The Outflow Given Linear Storage formula calculates the outflow rate from a channel reach based on the total storage and a constant value. This relationship is fundamental in hydrology for understanding water flow dynamics in river systems and catchment areas.
The calculator uses the formula:
Where:
Explanation: This formula represents a linear relationship between storage and outflow, where the constant K is determined by flood hydrograph characteristics of the catchment.
Details: Accurate outflow calculation is crucial for flood forecasting, water resource management, hydraulic engineering design, and environmental impact assessments of water systems.
Tips: Enter the total storage in cubic meters and the constant K value. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is the physical meaning of constant K?
A: Constant K represents the time characteristics of the catchment and is determined by flood hydrograph properties. It relates to the storage-outflow relationship of the system.
Q2: When is this linear storage model appropriate?
A: This model is appropriate for systems where storage and outflow maintain a linear relationship, typically in simplified hydrological modeling and certain catchment conditions.
Q3: How is total storage in channel reach measured?
A: Total storage can be estimated through field measurements, remote sensing data, or calculated based on channel geometry and water level measurements.
Q4: What are typical units for these measurements?
A: Storage is typically measured in cubic meters (m³), outflow in cubic meters per second (m³/s), and K is a dimensionless constant or may have time units depending on the specific application.
Q5: Are there limitations to this simple model?
A: Yes, this linear model may not accurately represent complex hydrological systems with non-linear storage-outflow relationships or rapidly changing conditions.