Is river dredging hard or soft engineering?
Is river dredging hard or soft engineering? Examples of hard engineering strategies include artificial embankments or levees, channelisation, diversion spillways and dredging. These are larger than natural levees and are usually made of erosion-resistant concrete. They allow more water to flow in the river at a greater height so flood risk is reduced. Is River Restoration hard engineering? River restoration involves restoring a river that has undergone hard engineering back to its original course. This can involve un-straightening a channel, removing artificial levees, diversion spillways & wing dykes. River restoration also has as good as 0 maintenance costs making it...