Polliwog Park doubles as a flood control basin, and after 5 days of rain, it's filling up. Those two arcs out in the water? They're benches like the one at the lower left.
It's not the fullest I've seen it, though. A few years ago, it filled up to the top of the swing sets. Photos here: https://www.flickr.com/photos/kelsonv/albums/72157705902061854