Talk:Retention basin
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[edit] Merge with Detention basin request
I did think about this before creating two articles. I decided that having one article would be the wrong direction to take. While they are both water managment structures, they function in different ways. One is almost always dry, the other always contains water. One is usually in a desert and the other in areas of high rainfall. One is built as a result of flood control planning, the other to meet zoning or land use requirements. One is mostly for flood water control and the other is for rain water management. The categories will that apply will also differ. Both can get encylopedic articles written about them and, while needs some cleanup, are fairly decent ones as it stands. Also people in different parts of the country don't even know the other exists, so combining them could tend to confuse things. That is especially true today since many in the US think they are one in the same. You would still need a redirect, so not much might be gained. Wikipedia is not paper. Vegaswikian 16:32, 16 August 2005 (UTC)
- No additional comments so I'm going to pull the merge requests. Vegaswikian 02:44, 26 September 2005 (UTC)
[edit] Merge from Retention pond
Retention pond includes both retention and detention basins and should be combined into the larger more detailed articles. A redirect should be left. Vegaswikian 06:24, 27 October 2005 (UTC)
- I would be okay with that, Retention basin is a more generic term. Segregate all the stuff in Retention pond and create a new section under Retention basin. --Rob 14:22, 27 October 2005 (UTC)
- I have merged in most of what was missing. There probably needs to be some moving around of some parts of the text. But I think that retention pond can be changed to a redirect at this point. Vegaswikian 23:35, 27 October 2005 (UTC)
- Done — it should be noted that even though people aren't supposed to be around these structures, numerous drownings are often still attributed to them every year. --Rob 23:53, 27 October 2005 (UTC)
- That comment is true for all dual use flood water control structures. The fact that I did not add it does not mean that you can not. I do think that drownings happen every place water is present, from a bucket of water to a bathtub to an ocean, so does it need to be mentioned in every article of an encylopedia? Vegaswikian 00:10, 28 October 2005 (UTC)
- Done — it should be noted that even though people aren't supposed to be around these structures, numerous drownings are often still attributed to them every year. --Rob 23:53, 27 October 2005 (UTC)
- I have merged in most of what was missing. There probably needs to be some moving around of some parts of the text. But I think that retention pond can be changed to a redirect at this point. Vegaswikian 23:35, 27 October 2005 (UTC)
[edit] Combination Detention/Retention
It is my understanding that a detention basin is a basin from which water leaves through an outlet (ie- pipe), while a retention basin is a basin from which water leaves only via infiltration and evapo-transpiration.
A detention basin can be a drain-dry detention basin (as most are, and as this article implies that all are). But there can also be a wet detention basin, from which water leaves through a pipe located with its invert well above the bottom of the pond. For example: an inlet pipe, invert elevation 500.00, enters a detention pond that stretches from 500.00 down to 480.00. An outlet pipe is located with its invert at 490.00, thus water always remains in the basin from EL 480.00 to 490.00. During/after a major precipitation event, this basin is filled to an elevation higher than 490.00 and then slowly lets water into the receiving channel. (It would be som much easier to draw this.) Since water leaves through an outlet pipe, the basin must be considered a detention basin (not retention), but is a wet detention basin.
To summarize my understanding....
-Detention Basins can be wet (outlet pipe invert above bot. of basin) or dry (outlet pipe invert at bottom of basin).
-Retention Basin are always wet, no outlet pipe.
131.183.21.228 22:33, 29 November 2006 (UTC)
- My understanding is that a detention basin is always of the dry type. If it retains water, then it is a retention basin with a controlled level. Retention basins can and do have an outlet. Maybe an expert can provide some better information. Vegaswikian 23:03, 29 November 2006 (UTC)
