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Artificial wetland module

This calculator forms part of the Wetland Web Calculators series.

The artificial wetland is a gravel or sand filled module planted with emergent water plants. It slows down the flow of water and provides an effective �polish� of water, removing nutrients and sediments. A retention period of at least five days should be used.

What is the available water space in the soil? First calculate available water space (%)	%
What will be the maximum daily volume of waste water?	litres
How long do you want the water to stay in this module?	days
Which length to width ratio will you use?	3:1 4:1
Which gravel depth will you use?	0.6 metres 0.7 metres 0.8 metres 0.9 metres 1.0 metres

What is the available water space in the soil?

First calculate available water space (%)

What will be the maximum daily volume of waste water?

litres

How long do you want the water to stay in this module?

days

Which length to width ratio will you use?

3:1 4:1

Which gravel depth will you use?

0.6 metres
0.7 metres
0.8 metres
0.9 metres
1.0 metres

Results

The following suggested dimensions are based on a daily volume of --- litres, length of stay --- days, length to width ratio ---, a gravel depth of --- metres and an available water space of ---%.

Write down the calculated dimensions for this artificial wetland module, including the surface area, then go back and select the next type of module you plan to include in your wetland system.

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Diagram of artificial wetland module

Diagram of 'artificial wetland' module