Flood Control and Nutrient HarvestingPermaculture and the brilliant Geoff Lawton, has the solution to wasteful and damaging river and other types of flooding. Bamboo!! [but also see Vetiver Grass too at http://en.wikipedia.org/wiki/Vetiver_System].
See the video at the link below.
The real benefit is that the careful placing of differing types of bamboo into differing strata of a flood zone can provide a valuable harvesting of the nutrients washed out from the flood upstream. Not only will the roots of bamboo stabilise, it will trap sediments washed down. So there is a double function to start.
This has to be a key attribute to turn 'poor' quality landscapes into a fertile and productive resource for those working the land.
|Profile and suggestions for flood control
|River debris caught by the bamboo