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The Yield of Catchment equation calculates the total water yield from a catchment area by considering observed flow volume, abstraction in time, and changes in storage volumes. It provides a comprehensive assessment of water balance in hydrological systems.
The calculator uses the Yield of Catchment equation:
Where:
Explanation: The equation accounts for all water components in a catchment system, including measured flows, water abstractions, and storage changes.
Details: Accurate yield estimation is crucial for water resource management, irrigation planning, urban water supply, and environmental flow assessments in hydrological systems.
Tips: Enter observed flow volume, abstraction in time, and change in storage volumes in m³/s. All values must be valid numerical inputs.
Q1: What is Observed Flow Volume?
A: Observed Flow Volume is the recorded quantity of water that would have flowed in a river past a particular point in a particular period, measured in cubic meters per second.
Q2: What does Abstraction in Time include?
A: Abstraction in Time includes water taken for irrigation, water supply, industrial use, and inclusive of evaporation losses in surface water bodies on the stream.
Q3: How is Change in Storage Volumes calculated?
A: Change in Storage Volumes of water storage bodies on the stream is the difference between water incoming and outgoing over a specific time period.
Q4: What are typical yield values for catchments?
A: Yield values vary significantly based on catchment size, climate, geology, and land use patterns. There is no single "normal" value as it depends on specific catchment characteristics.
Q5: When should this equation be used?
A: This equation should be used for water balance studies, hydrological modeling, and water resource planning where comprehensive assessment of catchment yield is required.