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The Norfolk Broads Forum / General Chat / Potter Heigham Bridge Height Calculator
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Posted By Discussion Topic: Potter Heigham Bridge Height Calculator

Similar Threads That Might Help :
Potter Heigham Bridge Height| Potter Heigham Bridge Height| Potter Heigham Bridge Height update| Potter Heigham Bridge Height update| potter heigham bridge heights|

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Strowager
Jan-07-2013 @ 4:00 PM                           Permalink
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Mardles sometimes
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Thanks Richard, it should now enable anyone to satisfy their own curiosity of how the air clearance is doing at Potter.

A great idea of Palmtree to take that set of photos.

jitterbug
Mar-18-2013 @ 1:24 PM                           Permalink
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Hi everyone,

Quick question to find out what the water levels are like in horning and potter heigham area? We are in cambridgeshire and with the high rainfall our rivers have escaped their banks!

We are hoping to move our yacht from ferry marina to its new berth at hickling this friday and wanted a bit of insight in to how levels are there, will save us a journey if potter bridge not "dooable!"

Thanks

Matt
Yacht Jitterbug

londonrascal
Mar-18-2013 @ 3:21 PM                           Permalink
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I think I am right in saying that if you look at the photo attached to the first post in this thread, you use the calculations from the Environment Agency's water level gauge (web link in first post also) and by applying the formula get the river level at Potter Heigham Bridge - meaning you need not be at Potter Heigham or see the gauge at the bridge/pilots office to get an idea of the air draft.


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Siddy
Mar-18-2013 @ 10:00 PM                           Permalink
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On 16th it was showing 5'2" at the bridge blowing a gale, water over the bank on the free grass moorings on the right and we got on moorings near bridge office.
Today at 1200 it had dropped 4" and like a mill pond.



Siddy

FishersHaven
Feb-10-2015 @ 10:09 AM                           Permalink
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I thought this thread deserved a bump, found for me by expilot as a perfect answer to my question.

We love the Broads

Jeremy-Aslan
Feb-10-2015 @ 5:13 PM                           Permalink
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The clear info from Strow at the beginning of this thread is very useful.

Another way of calculating the same result, which I find easier, is as follows:

Google 'Environment Repps' and the first hit is the reading up to 4am that morning at Repps

From that trace, figure out what the height will be at the time you want to go through TODAY.

Then, 0.5m = 6ft clearance (as per Pilot Office Gauge).  Work out how many cm 'better' than 0.5m it is, then convert to inches (where 2.5cm = 1 inch, roughly), and it's that  many inches greater than 6ft.  I.E., 0.35m is 15cm better than 0.5, so 6in better than 6ft, = 6ft 6in.

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wombat1
Feb-11-2015 @ 8:08 AM                           Permalink
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Boy am I glad I know we cant get underneath! Confused

        LAGER THAN LIFE

Limbury1
Feb-11-2015 @ 3:50 PM                           Permalink
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Me too, my problem is ludham bridge im nervous about it.last time I was there I couldn't get under according to the measurements so aborted it .So I've got to get up courage and try I need 8ft 6ins to scrape under.

Limbury 1
If you can't see it it's not there ,if you
can see it , it's still not there,the world
is all Illusion.

palmtree
Feb-11-2015 @ 8:02 PM                           Permalink
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If the Reps height gauge falls to zero, that is about 7'7" clearance. Has this ever been seen at potter?

Ian

ADI
Feb-11-2015 @ 8:57 PM                           Permalink
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someone pulled out the plug on 11 February 2012 see attached photo, I had never seen the boat so low in the water i thought it was half sunk.

Regards

Adrian, Michelle, Beck and Braydon,
the crew of FERZAN.


Attached File
View Full Size Image

annville
Feb-12-2015 @ 1:16 PM                           Permalink
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Hi Limbury 1 My previous boat needed 8ft 6inches i found that if it was close, i had a height pole on front of boat,  if you edge under in centra then push throttle full open the screw digs the water out from under the boat the boat drops noticeable giving more air gap then momentum kicks in and then your through, you need to compensate on rudder for any side ways movement of stern, I had twin engines so it made it easy for me, often thought that may be one of the reasons in addition to directional stability Pilots go through bridges on full throttle John

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