Which rivers have flooded as a result of mans intervention to them?

Question

River that have been changed like straighten or resticted? where a flood has been caused by man

Answer 1

A famous one was the missisipi in America back in the 90s. A storm that remained over America for days resulted in high river levels putting too much pressure on man made deffences alongside the river causing them to burst resulting in towns flooding along the river and i think many people lost their lives as a result. A more recent catastrophy was Hurricane Katrina when high sea levels burst the levvies and flooded New Orleans.

Answer 2

Flooding is a natural process in streams, so the most accurate answer to your question is none, except when dams break. In a natural stream system, small floods occur several times per year, which is the process that creates a floodplain. The frequency of natural floods is related to the flood magnitude - small floods are common and large floods are rare. This is why people build levees and dams in the first place - to eliminate the frequent flooding, so they can put buildings in the floodplain.

Once you mess with the hydraulic features of a stream by straightening it or preventing a stream from expanding into its floodplain, you change the relationship between flood magnitude and flood frequency. In a controlled river, small floods and moderate-sized floods may be eliminated completely. Its rare to find circumstances when a channel is restricted so much that it increases flood frequency because that defeats the purpose, and engineers usually calculate how much capacity is needed to accommodate the typical range of flows. When a flood occurs in a controlled river system, the results are catastrophic because the river flows back into its floodplain and floods all those buildings that should have never been there in the first place. To make matters worse, the levees and dikes then prevent the flood waters from subsiding because the water can't drain back into the river.

Answer 3

Missouri River, Platte River, Arkansas River

Coach

Answer 4

Mississippi was a big one. I should know about that one personally. I was at Shriner's Hospital with my daughter when the levys' broke around St. Louis. We didn't think we were going to be able to get home for a long while. Going home, we saw all the damage that it had caused, and 1 year later it was still bad.

Answer 5

The Colorado and the Mississippi come to mind