Any floods?

[neeeeeeeeeek 10]

Various flood warnings in place, just wondered if the Don had breached anywhere?

[Annie Bynnol 612]

43 minutes ago, neeeeeeeeeek said:

Various flood warnings in place, just wondered if the Don had breached anywhere?

Only one flood alert for Sheffield

Upper River Don catchment

Flooding is possible - be prepared

River levels are rising as a result of the prolonged rainfall on Saturday 16/3/19. Levels are expected to peak around 9pm tonight(Sat). We do not expect any flooding to occur

[Top Cats Hat 10]

How are they getting on with the flood relief scheme in Rivelin Valley?

[dutch 68]

They fixed the don really well and it flows twice as fast as it did pre 2007.

It never gets that high again and when it does it's only for a short time, 

 

Before 2007 it used to come up much higher after a bit of rain flow slower and stay like that for at least a week. 

Now levels recede within 12 hours.

Edited March 17, 2019 by dutch

[Annie Bynnol 612]

2 hours ago, dutch said:

They fixed the don really well and it flows twice as fast as it did pre 2007.

It never gets that high again and when it does it's only for a short time, 

 

Before 2007 it used to come up much higher after a bit of rain flow slower and stay like that for at least a week. 

Now levels recede within 12 hours.

The EA work was to widen and deepen the river profile and to remove trees and islands of rock and silt which were allowed to build because of misguided pressure by environmentalists. The  organic material that had been allowed to build on those islands and on the banks was swept away in one catastrophic event creating 'dams' which created the floods.

 

Increasing river speed is not a solution to flooding. In fact the opposite is true because increased speed causes undermining of embankments (natural and man-made) and bridges.

 

The EA plan to repair and re create the natural floodplains in the tributaries of the Don have been delayed by local nimby environmentalists and money problems.

 

[dutch 68]

I have lived by rivers all my life, only one that ever flooded was the Don river.

And I'm certain that whatever they have done has made a big difference to how don river behaved twenty years ago.