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Mon, 11 Apr 2016 7:20 am BST- Light Rain
5 Day Forecast

Wind 2.0 mph @ 40°
48.0°F/8.89°C Humidity 93% Pressure 29.65 (S)

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Helmsman1946
Nov-20-2018 @ 1:26 PM                           Permalink
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Here is one for a start
http://www.broads-authority.gov.uk/boating/navigating-the-broads/urgent-boating-news/neatishead-electric-installation
Extra points at Reedham Quay (at the end which does not flood) would be hopefully be less costly to install as there is still the redundant electricity supply box which provided power for the crushing skip that was there opposite Middle Hill.

Peter

JP
Nov-22-2018 @ 4:17 PM                           Permalink
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Dear batrabill,

The lower Bure is a well-known ‘dredging hot spot’ – we get a large amount of deposited sediments on the series of bends between Acle and Marina Quays.

We have targeted dredging over the last few years to remove these deposits.

2018/19 – 14,000m3 removed from Lower Bure
2017/18 – 5,000m3 Bure Loop
2017/18 – 5,820m3 removed from lower Bure
2015/16 – 12,500m3 removed from Bure at Stokesby.

This focussed dredging has helped bring the Lower Bure up to river specification and removed many deposits which shallowed bends and also we have removed reed encroachments, giving a better line through bends for craft.

As far as we know this work has not had any significant effect on water levels at Potter Heigham (or higher at Hickling where the EA monitor water levels).

Passage through Potter Heigham (ancient monument) is not just restricted via height of the bridge and water depth, but also width. Water flows at this end of the system are less than the lower Bure, but this is affected by many factors, none of which are dredging related.

Broadland Environmental Services Limited (BESL) has done some modelling on this system and from memory the sheer amount of tidal input coming in at Great Yarmouth is one of the biggest factors in holding water further up in the upper reaches of the River Thurne.

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

Regards

John


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


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