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Discussion Topic: Ask JP 5
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batrabill |
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It is a widely held belief amongst boaters that if the Lower Bure was dredged more the water level at Potter Heigham Bridge (to give a specific example) would drop. This would make the area above the bridge more accessible to more boats.
Is that belief true?
What evidence is there of what factors influence the water level at Potter Heigham bridge?
If that is true, why don't the BA devote more resources to dredging the Lower Bure?
Bill
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JollyRodger |
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Wise question is that Bill. To that I would ask the same of the Upper Thurne especially as by doing that it would increase the flushing effect of the Bure in general.
Jolly Rodger
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annville |
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Dear Mr Paxman What is the cost of a electric post/tower. Is there a average cost per linear meter for each supply from the grid to each mooring location. and is it the BA's intention to increase the number of electric points/moorings, and what time scale is there to increase them. John
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Helmsman1946 |
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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
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JP |
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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
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annville |
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Why is it that i didn't get a answer to my question from JP.John
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JP |
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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
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annville |
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Thankyou i felt left out there for a moment no rush. John
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batrabill |
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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
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annville |
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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
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Nov-19-2018 @ 4:22 PM
