Home Back

Pond Evaporation Calculator

Evaporation Formula:

\[ Evaporation = SA \times ER \times 7.48 \div 12 \]

square feet
inches per day

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is Pond Evaporation?

Pond evaporation refers to the process where water changes from liquid to vapor and escapes from the pond surface. It's a significant factor in water loss for ponds, especially in warm and dry climates.

2. How Does the Calculator Work?

The calculator uses the evaporation formula:

\[ Evaporation = SA \times ER \times 7.48 \div 12 \]

Where:

Explanation: The formula calculates daily water loss by converting surface area and evaporation rate into gallons, accounting for unit conversions.

3. Importance of Evaporation Calculation

Details: Understanding evaporation rates helps pond owners manage water levels, plan for refilling, conserve water resources, and maintain healthy aquatic ecosystems.

4. Using the Calculator

Tips: Enter surface area in square feet and evaporation rate in inches per day. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect evaporation rates?
A: Temperature, humidity, wind speed, and sunlight exposure significantly impact evaporation rates. Higher temperatures and wind speeds increase evaporation.

Q2: How can I measure evaporation rate?
A: Use an evaporation pan or calculate by measuring water level changes over time. Local weather stations often provide evaporation data.

Q3: What are typical evaporation rates?
A: Rates vary by season and location. Summer rates can range from 0.1 to 0.5 inches per day, while winter rates are typically lower.

Q4: How can I reduce evaporation?
A: Use pond covers, shade structures, windbreaks, or evaporation-reducing chemical films to minimize water loss.

Q5: Does pond depth affect evaporation?
A: Depth doesn't directly affect the evaporation rate per square foot, but deeper ponds lose a smaller percentage of total volume to evaporation.

Pond Evaporation Calculator© - All Rights Reserved 2025