river, flooding control, channelized, channelization
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 10:57:082022-06-22 01:40:19Concrete-lined river channel and Los Angeles, California
