Re: [talk-au] Tagging stormwater drain areas?

[Richard Colless]

Liz wrote: On Mon, 17 May 2010, Steve Bennett wrote: Incidentally, to make sure I'm understanding what we're talking about, you're talking about an area where water runs *into*, in order to seep into the soil? That would be a "retention basin" I think, and these drains have exits as far as i understand Most retention basins still have exits. During light rain water flows out the exit. When rainfall is really heavy, the exit doesn't cope, and the water backs up and fills the retention basin. It later drains away, either into the soil or through the exit channel/pipe/drain. The exits are deliberately made small to hold the water back and prevent flooding downstream. (Source - a friend who used to work for the Water Board) Richard

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