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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.]]
| + | [[File:Pond curves.png|thumb|The largest area is at the top, level 0 m; each subsequent lower depth has a smaller area]] |
− | | + | {{Clickable button|[[File:TTT.png|350 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]}} |
− | Dry ponds are a storage element in the Treatment Train Tool.
| + | |
| {|class="wikitable" | | {|class="wikitable" |
− | |+A [[rainwater harvesting]] cistern as a storage element (key parameters) | + | |+A [[Dry ponds|dry pond]] as a storage element (key parameters) in the Treatment Train Tool. |
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− | !colspan = "2" style="background: darkcyan; color: white; align = center"|Stage Storage | + | !colspan = "2"|Stage Storage |
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− | |Name||Important to have a unique name, to associate with the subcatchment (harvesting area) | + | |Name||Important to have a unique name, to connect it with the catchment area |
| |- | | |- |
− | |Storage type||No removal | + | |Storage type||Dry detention ponds |
| |- | | |- |
− | |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 | + | |Bottom elevation (m)||This is important to correspond with other components, <br>e.g. when the overflow is coupled to another BMP within a treatment train |
| |- | | |- |
− | |Maximum depth (m)||Height of the RWH cistern | + | |Maximum depth (m)|| |
| |- | | |- |
− | |Lined/unlined||Lined | + | |Lined/unlined||Unlined (ideally) |
| |- | | |- |
− | |Evaporation factor||0 | + | |Underlying soil||Choose from five; sandy soils drain more quickly. |
| + | |- |
| + | |Evaporation factor||? |
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− | !colspan = "2" style="background: darkcyan; color: white; align = center"|Curves
| + | |Suction head (mm)||? |
| |- | | |- |
− | |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. | + | |Saturated conductivity (mm/hr)||? |
| + | |- |
| + | |Initial soil moisture deficit (fraction)||? |
| + | |- |
| + | !colspan = "2" align = center"|Curves |
| + | |- |
| + | |colspan = 2|The Curves table is designed to accommodate the side slopes. The top line begins at 0 m, with subsequent depths in the following lines. |
| |} | | |} |