If you put in something that prevents erosion in one place, you will get more erosion in another place. This is actually a huge problem in shoreline environments: one person puts out a jetty to save their personal beach, someone else loses their personal beach and gains a lasting hatred for their neighbor. Plus you'll lose that sediment load at that point, which can have environmental effects downstream. This is a bigger problem when dams are put in, which completely shut off sediment transport and thus contribute to the deterioration of wetlands.
Erosion prevention methods are used on a river, ie. rip rap. What effect will this have downstream?
On rip, hardly any. On rap, let's hope they ban it.
Reply:did u or your family and house got swept by a flood or a landslide.Why are u asking such questions
Reply:It would depend on how far down stream. Imediately after the rip rap would be a slight swirling action, then 20 to 25 feet there would be no action. No contamination after initial placement, once rip rap is settled.
Reply:It prevent the movement of sediment downstream and this can radically change the profile of the downstream stream bed and therefor the organisms that can or can't live there.
No comments:
Post a Comment