San Antonio’s Riverwalk is truly a marvel, with lush landscaping, interesting architecture and architectural features, and of course, the river itself.

To keep it all running, I’m sure the city has to spend a pretty penny on everything from bridge maintenance to dredging. And, every morning, the Lady Eco cruises the entire length of the downtown loop, with half a dozen large nets attached to hydraulic arms on each side.

All that landscaping generates a lot of leaves and twigs, and all those pedestrians generate a fair number of cigarette butts, balloons, and so on. Something in the river generates an unfortunate number of dead carp, and I’m sure the list of items recovered gets even weirder from there.