Rain Collection Calculator

Formula

To calculate the amount of rainwater collected:

$RC = A \times R \times C$

Where:

$RC$ is the amount of rainwater collected
$A$ is the collection area (in square meters)
$R$ is the rainfall intensity (in millimeters per hour)
$C$ is the collection efficiency (a decimal value between 0 and 1)

What is Rain Collection?

Rain collection, also known as rainwater harvesting, is a process that involves gathering, storing, and managing rainwater for future use. This is typically done by collecting rainwater from a roof or other hard surface, such as a patio or driveway, and directing it into a storage container, such as a barrel or cistern, through a system of gutters and downspouts. The collected rainwater can then be used for various purposes, such as watering plants, flushing toilets, washing clothes, or even drinking, provided it has been properly treated and purified. Rain collection is an effective way to conserve water, reduce water bills, and lessen the demand on municipal water supplies. It also helps to reduce stormwater runoff, which can lead to erosion and flooding.

Example Calculation 1

Let's assume the following values:

Collection Area ( $A$ ) = 100 square meters
Rainfall Intensity ( $R$ ) = 10 mm/hour
Collection Efficiency ( $C$ ) = 0.8

Using the formula:

Step 1: Multiply the collection area by the rainfall intensity:

$A \times R = 100 \times 10 = 1000$

Step 2: Multiply the result by the collection efficiency:

$RC = 1000 \times 0.8 = 800$

The amount of rainwater collected is 800 liters.

Example Calculation 2

Let's assume the following values:

Collection Area ( $A$ ) = 50 square meters
Rainfall Intensity ( $R$ ) = 5 mm/hour
Collection Efficiency ( $C$ ) = 0.9

Using the formula:

Step 1: Multiply the collection area by the rainfall intensity:

$A \times R = 50 \times 5 = 250$

Step 2: Multiply the result by the collection efficiency:

$RC = 250 \times 0.9 = 225$

The amount of rainwater collected is 225 liters.