river, flooding control, channelized, channelization, channeling
https://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.png00Marli Millerhttps://geologypics.com/wp-content/uploads/2017/04/geologic-time-pics-logo-300x115.pngMarli Miller2022-06-20 10:57:082025-01-24 03:32:41Concrete-lined river channel and Los Angeles, California
