Reply
 
Thread Tools Search this Thread
 
Old 10 September 2008, 18:54   #11
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Quote:
Originally Posted by BruceB View Post
Is that not around 4 inches of rain a day? Would the country not be underwater if we regularly got 4 inches of water every 24 hours?
I think the record rainfall for the UK is in the region of 6-10 inches in a month!
Methinks you jest sir!
Nope you are quite a bit out there.

The highest rain in a 24hr period was 11" - yes in a day. At the Gnoll in Neath 4" was recorded in 90 minutes!!!

South Wales IS almost always underwater now - in august we didn't have a single 24hr period without rain.

There is one point you are missing though - it's all down to catchment area and my RIB has a bloody big deck!!!
__________________

__________________
codprawn is offline   Reply With Quote
Old 10 September 2008, 19:22   #12
Member
 
Country: UK - Wales
Town: West Wales
Make: Vipermax 5.8, SR4.7
Length: 5m +
Engine: 150 Opti, F50EFi
Join Date: Sep 2005
Posts: 6,298
Quote:
Originally Posted by codprawn View Post
The highest rain in a 24hr period was 11" - yes in a day. At the Gnoll in Neath 4" was recorded in 90 minutes!!!
Yes, I was at that match - it wasn't rain that caused the flood, but Neath fans' tears after they were hammered by the Scarlets.

Quote:
Originally Posted by codprawn View Post
There is one point you are missing though - it's all down to catchment area and my RIB has a bloody big deck!!!
1000 litres at 4" depth covers an area of around 10 sq.m.
What's the catchment area of your deck?
__________________

__________________
Downhilldai is offline   Reply With Quote
Old 10 September 2008, 21:47   #13
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Quote:
Originally Posted by Downhilldai View Post
Yes, I was at that match - it wasn't rain that caused the flood, but Neath fans' tears after they were hammered by the Scarlets.



1000 litres at 4" depth covers an area of around 10 sq.m.
What's the catchment area of your deck?
Haven't measured it!!! The water drains straight into the bilge. When the pump packed up - and later when the battery was removed for a day - the boat filled up almost to deck level. When it was pumped out it took 45 mins to empty - not very scientific but using data from some actual tests of the Rule 500 it pumps about 24lpm.
__________________
codprawn is offline   Reply With Quote
Old 11 September 2008, 03:14   #14
Member
 
Country: UK - Scotland
Town: Inverness
Boat name: none
Make: none
Length: 5m +
Engine: none
MMSI: none
Join Date: Mar 2007
Posts: 1,908
I took the maximum rainfall figures from the met office site and used 14sq m as a "catchment area"
I think there is a slight exagerration in how much water is filling the boat as to fill to the top would take around 12 of water to fall in 24hrs and the catchment area is the size of the bit being filled so it is still a full 12 inches rather than being concentrated into a small area than the "catchment area"
Taking the rough area of the boat it would take around 3000 litres to fill a boat that size give or take a few litres for the exact sizes.
If this much water fell in the two days you happened to have the boat not pumped I would say either you are the worlds unluckiest person, Wales is permanently under water or its ever so slightly exagerrated........
1 inch of rain falling in an area of 1 sq m is still 1 inch deep if it falls over 10 sq m.
__________________
BruceB is offline   Reply With Quote
Old 11 September 2008, 06:58   #15
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Well Swansea is the wettest city in Britain - last year it had 2300mm of rain which is pretty bad but Burry Port is even worse.

I told you how I measured the amount of water on board - I said it wasn't very scientific but I reckon not far off the mark.

And as to luck my mates call me Jonah - if it can go wrong it usually does for me..........
__________________
codprawn is offline   Reply With Quote
Old 11 September 2008, 11:42   #16
Member
 
Country: UK - Scotland
Town: Inverness
Boat name: none
Make: none
Length: 5m +
Engine: none
MMSI: none
Join Date: Mar 2007
Posts: 1,908
2300mm is less than 1/4 inch of rain per day on average
__________________
BruceB is offline   Reply With Quote
Old 11 September 2008, 13:01   #17
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
Quote:
Originally Posted by BruceB View Post
2300mm is less than 1/4 inch of rain per day on average
Doesn't sound so bad when you say it like that does it?

This is a photo of Lyn Brianne taken last week - it should be at it's lowest level at the end of summer........

Some people have actually taken canoes down the spillway!!!
Attached Thumbnails
Click image for larger version

Name:	P1030862 (Large).jpg
Views:	151
Size:	60.8 KB
ID:	37480   Click image for larger version

Name:	P1030859 (Large).jpg
Views:	143
Size:	71.7 KB
ID:	37481   Click image for larger version

Name:	P1030857 (Large).jpg
Views:	140
Size:	89.5 KB
ID:	37482  
__________________
codprawn is offline   Reply With Quote
Old 11 September 2008, 14:11   #18
RIBnet admin team
 
Poly's Avatar
 
Country: UK - Scotland
Boat name: imposter
Make: FunYak
Length: 3m +
Engine: 2 stroke YAM 20 HP
MMSI: 235089819
Join Date: Sep 2005
Posts: 10,114
Quote:
Originally Posted by codprawn View Post
the boat filled up almost to deck level. When it was pumped out it took 45 mins to empty -
but at least your pump is getting more efficient than when we had the same argument last year

Quote:
Originally Posted by codprawn View Post
I know it will collect that much because ... the following day after typical heavy rain and it's taken almost 1hr to pump out.
__________________
Poly is offline   Reply With Quote
Old 11 September 2008, 15:07   #19
Member
 
Country: UK - Scotland
Town: Inverness
Boat name: none
Make: none
Length: 5m +
Engine: none
MMSI: none
Join Date: Mar 2007
Posts: 1,908
Is that it? here is a couple of pics of a real overflow on a reservoir going on Loch Laggan near Fort william, and it isn't even all six pipes PLUS this is the overflow of the overflow (the dam actually overflows to another dam a few miles away and this is the water that is too much even for that!
Wales sounds positively dry compared to Lochaber.......... 2300mm? Pah!
And canoeists don't just try it occasionally, see pic for them actually doing it regularly.
Attached Thumbnails
Click image for larger version

Name:	laggan2.jpg
Views:	156
Size:	17.3 KB
ID:	37485   Click image for larger version

Name:	laggan.jpg
Views:	142
Size:	12.3 KB
ID:	37486  
__________________
BruceB is offline   Reply With Quote
Old 11 September 2008, 15:44   #20
Member
 
Country: UK - Wales
Town: swansea
Boat name: Too Blue
Make: BLANK
Length: 8m +
Engine: Suzuki DT225
Join Date: Mar 2004
Posts: 12,791
There is a slight difference - about 45 degrees by the look of it!!!

These blokes are bonkers!!!





Read the comments as well.........
__________________

__________________
codprawn is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 14:06.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.