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{{Clickable button|[[File:TTT.png|400 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]}}
[[File:Storage TTT.png|thumb|[[Dry ponds]] are found in storage element in the LID TTT.]]
[[File:Storage TTT.png|thumb|[[Dry ponds]] are found in storage element in the LID TTT.]]
Dry ponds are a storage element in the Treatment Train Tool.
Dry ponds are a storage element in the Treatment Train Tool.
{|class="wikitable"
|+A [[rainwater harvesting]] cistern as a storage element (key parameters)
|-
!colspan = "2" style="background: darkcyan; color: white; align = center"|Stage Storage
|-
|Name||Important to have a unique name, to associate with the subcatchment (harvesting area)
|-
|Storage type||No removal
|-
|Bottom elevation (m)||This will be 0 for installations at ground level, but will often be underground. This is of greater importance when the overflow is coupled to another component within a treatment train
|-
|Maximum depth (m)||Height of the RWH cistern
|-
|Lined/unlined||Lined
|-
|Evaporation factor||0
|-
!colspan = "2" style="background: darkcyan; color: white; align = center"|Curves
|-
|colspan = 2|The Curves table is designed to accommodate ponds of roughly conical dimensions. Rainwater cistern are usually cuboid or cylindrical in shape, so that the area (m<sup>2</sup>) will remain the same throughout the depth. The top and bottom dimensions can be placed within the first two rows of the table.
|}