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Maximum Hourly Flow (MHF) refers to the highest volume of water passing a specific point in a river, stream, or through a water treatment system within a single hour. It is a critical parameter in hydraulic engineering and water resource management.
The calculator uses the formula:
Where:
Explanation: This formula estimates the peak hourly flow based on the maximum daily flow, using a multiplication factor of 1.5 which is typical for areas of moderate sizes.
Details: Accurate calculation of maximum hourly flow is essential for designing water distribution systems, sewage systems, and flood control infrastructure. It helps ensure that systems can handle peak demand periods without failure.
Tips: Enter the maximum daily flow value in cubic meters per second (m³/s). The value must be greater than zero.
Q1: Why is the factor 1.5 used in this calculation?
A: The factor 1.5 is a standard multiplier used for areas of moderate sizes to estimate peak hourly flows from maximum daily flows, based on typical water consumption patterns.
Q2: What units should be used for input values?
A: Both input and output values are in cubic meters per second (m³/s) to maintain consistency in hydraulic calculations.
Q3: Is this formula applicable to all areas?
A: This formula is specifically designed for areas of moderate sizes. Different multipliers may be needed for very small or very large urban areas.
Q4: How accurate is this estimation method?
A: While this provides a good estimate for planning purposes, actual peak flows can vary based on local conditions, weather patterns, and specific consumption behaviors.
Q5: Can this calculator be used for stormwater systems?
A: This calculator is primarily designed for water supply systems. Stormwater systems may require different calculation methods that account for rainfall intensity and catchment characteristics.