On Thu, 24 Oct 2019 at 10:56, John Willis via Tagging < tagging@openstreetmap.org> wrote:
Inside, there are three “retarding basins” (numbered 1, 2 & 3), with #1 > having with a large traditional reservoir, parks, golf course, and sports > grounds inside. > There is more to the system than that. There are also underground holding tanks and tunnels: https://www.youtube.com/watch?v=cfJOW2PtrGk -- Paul
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