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Mon, 11 Apr 2016 7:20 am BST- Light Rain
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annville
Nov-22-2018 @ 4:59 PM                           Permalink
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Why is it that i didn't get a answer to my question from JP.John

JP
Nov-22-2018 @ 5:09 PM                           Permalink
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Afternoon John,

I have asked for the information and plan to get back to you tomorrow with the answer.

Regards

John

annville
Nov-22-2018 @ 6:57 PM                           Permalink
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Thankyou i felt left out there for a moment no rush. John

batrabill
Dec-04-2018 @ 1:27 PM                           Permalink
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John

Quote "We will check this understanding and re-post once we have specific information from the BESL model."

I wonder if you have been able to obtain any useful information on this?



Bill

annville
Dec-05-2018 @ 6:50 PM                           Permalink
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Dear Mr Paxman I see that CRT have had funding from Defra to install electric posts to enable boaters to have a alternative to running their engines at moorings. Can you not get funding from Defra to do the same for us. John

VetChugger
Dec-05-2018 @ 12:57 AM                           Permalink
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I suspect he may be busy with University Challenge! Now Mr Packman might be a more suitable target!

Trevor

JP
Dec-06-2018 @ 8:35 AM                           Permalink
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Good morning batrabill,

As promised we have followed up this matter with Broadland Environmental Services Ltd (BESL) and the company’s hydrological model addresses this issue. This is what it says ...

"Dredging the River Bure
Residents along the River Bure believe that flooding is aggravated by a lack of maintenance of the river channel. They propose that flood levels would be reduced if the river channel was dredged between Bure mouth & Three mile House.

In reality, the bed level near to the Bure mouth is raised and currently prevents extra water (saline water) from entering the system at high tide. If the channel were to be dredged from the mouth of the river, flood levels would in fact become worse.
Dredging the river further upstream from this point would possibly reduce water levels but by such a small amount that the overall effect would be negligible.

Potter Heigham Bridge
Anecdotal evidence suggests that flooding in the River Thurne is exacerbated by the presence of Potter Heigham Bridge.

This is a listed building, therefore no real solution to the problem can be provided. However, the model has been used to investigate this query. The results of the investigation indicate that the water levels on the River Thurne are governed more by water levels on the River Bure than they are by any structures over the river, as the presence OR not of the bridge makes no difference to peak water levels.

Whereas, significantly lowering or raising the River Bure water levels (e.g. through washlands or crest raising) lowers or raises the River Thurne water levels."

Hope that helps.

Regards
John


JP
Dec-06-2018 @ 8:36 AM                           Permalink
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Morning John,

Thanks for that news. Can you please see if you can find out if this is from the core Defra grant given to CRT or some special allocation. I will try and do the same using my contacts. Certainly if it is from the latter I will do my best to get some funding for this from the Department.

Cheers
John


JP
Dec-06-2018 @ 8:38 AM                           Permalink
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Morning Trevor,

Thanks for the correction – interestingly they have the same origin.

Cheers
John


Paladine
Dec-06-2018 @ 9:25 AM                           Permalink
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Just put the words - Islington Defra electric - into a search engine. This is a scheme to lower urban air pollution (supposedly). It is seen by some in the canal boating world as the thin end of the wedge to ‘gentrify’ an area popular with ‘continuous cruisers’ who don’t actually cruise very continuously.

"..for the avoidance of any doubt, the broads are not legally a national park and do not come under the national park legislation, and nor will they."
Parliamentary Under-Secretary of State for DEFRA (Hansard 2015)

batrabill
Dec-06-2018 @ 4:55 PM                           Permalink
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John, appreciate the reply. It's plainly a complex issue.

Quote "The results of the investigation indicate that the water levels on the River Thurne are governed more by water levels on the River Bure than they are by any structures over the river, as the presence OR not of the bridge makes no difference to peak water levels.

Whereas, significantly lowering or raising the River Bure water levels (e.g. through washlands or crest raising) lowers or raises the River Thurne water levels."

This suggests that the flood alleviation work which must have raised the crest level (it seems inevitable that extensive repair of the crests made the average height higher...) may be the main factor in the perceived rise in Thurne level??

Bill

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