1. What is Flow Rate Calculation?

Flow Rate Calculation determines the required pump capacity for waterfall features based on the width of the waterfall. It ensures adequate water flow for optimal visual and auditory effects.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Width \) — Waterfall width in inches
• 100 — Standard flow rate multiplier (GPH per inch)

Explanation: This formula provides the minimum flow rate in gallons per hour (GPH) needed to create a consistent water sheet across the entire waterfall width.

3. Importance of Flow Rate Calculation

Details: Proper flow rate calculation ensures efficient pump selection, prevents underperformance or energy waste, and maintains the aesthetic quality of the waterfall feature.

4. Using the Calculator

Tips: Enter the waterfall width in inches. The value must be greater than zero. The result shows the recommended minimum flow rate in gallons per hour (GPH).

5. Frequently Asked Questions (FAQ)

Q1: Why multiply by 100?
A: The multiplier of 100 GPH per inch is an industry standard that ensures adequate water coverage and flow density for most waterfall designs.

Q2: What if my waterfall has multiple tiers?
A: For multi-tier waterfalls, calculate each tier separately and sum the flow rates, or use the widest tier's measurement and add 20-30% for additional tiers.

Q3: Does water height affect flow rate requirements?
A: Yes, higher waterfalls may require additional flow rate. Add approximately 5% more flow rate for every foot of elevation above 3 feet.

Q4: What about pump head pressure?
A: This calculation provides flow rate only. Always check pump performance curves to ensure the selected pump can maintain this flow rate at your system's specific head height.

Q5: Can I use this for commercial waterfall features?
A: While this formula works for residential features, commercial installations may require professional engineering analysis due to larger scales and higher performance requirements.