San Antonio is also cleaning their riverwalk this month. They do it roughly every 2-3 years. Most of what will be removed is sediment, but the usual debris wi

San Antonio is also cleaning their riverwalk this month. They do it roughly every 2-3 years. Most of what will be removed is sediment, but the usual debris will also be pulled out - bicycles, dropped cellphones, assorted personal belongings and trash. http://www.kens5.com/story/news/2016/01/03/s-drain-river-walk-maintenance/78240360/ http://www.kens5.com/story/news/2016/01/03/s-drain-river-wal...