Rivers of Wales...

Pegasus

Administrator
Staff member
Came across this wonderful map of Wales, showing all the rivers. It's more like a work of art --- and it explains where all that rain goes, and why Wales is so green.....and has some superb caves under it...

wl



You can buy prints I believe...

http://dafyddelfryn.bigcartel.com/
 

Mike Wood

New member
Very cool indeed.. reminds me of a maze.
I started to try and trace a walking route from North to South, without crossing a stream, but my head started to hurt  :blink:
 

ZombieCake

Well-known member
Awesome, kind of dendritic and fractal like, reminds me a bit of those old slo-mo films of roots taking shape as a seed sprouts.
 

robjones

New member
Mike Wood said:
I started to try and trace a walking route from North to South, without crossing a stream, but my head started to hurt  :blink:

Can't be done: there are a couple of locations in mid Wales where bogs discharge streams that flow both eastwards and westwards!  :D
 

kay

Well-known member
ZombieCake said:
Awesome, kind of dendritic and fractal like, reminds me a bit of those old slo-mo films of roots taking shape as a seed sprouts.

Same reason really. It's the sort of pattern you get when there is a flow which is dispersed at one end and concentrated at the other. So water joining into streams and rivers, roots dispersing into the soil, blood vessels  - I've seen a similar pattern of logging roots in a forest.

It also interests me that if you look at a street map view of Google maps of the Dales, it doesn't show any details other than the surface water flows ... so you see a clear delineation of the limestone areas by a line of springs or a line of sinks.
 

RobinGriffiths

Well-known member
Previously I'd assumed that apart from the Dee and the Severn, they all stayed in Wales. On that map though there are loads of rivers spilling eastwards.

One criticism is that streams get the same weighting as rivers giving a false impression of actual flow regimes.

Robin :mad:
 

kay

Well-known member
mikem said:
At one point on the Wye, England & Wales are on the "wrong" banks...

Mike

Where's that, than? Just north of Monmouth, as the A40 comes down the hill?

Is Welsh Bicknor actually in England? - looks like it from Google maps.
 

kay

Well-known member
RobinGriffiths said:
Previously I'd assumed that apart from the Dee and the Severn, they all stayed in Wales. On that map though there are loads of rivers spilling eastwards.

Having been brought up between Severn and Wye, I was very aware that they both rose in Wales (very close together) despite both flowing through England for much of their length (Wye is the river that Hereford is on) - so quite surprised that that one hadn't worked its way into your consciousness. But then, I speak as a person who, as a mature adult, had to check on a map to see whether Leeds was N or S of Sheffield. :-[
 

mikem

Well-known member
Yes, between Monmouth & Symonds Yat. Having come from Leeds I now spend quite a bit of time on the Wye...

Mike
 

kay

Well-known member
Logging tracks
https://jennydenton.net/click-to-view/sarawak-pics/aerial-logging-tracks-2/
aerial-logging-tracks1.jpg


 
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