Jump to content
eggsarascal

Whaley Bridge Evacuated

Recommended Posts

32 minutes ago, openspaceman said:

and while we are on that subject; what was there before this spillway was made?

A good question, well presented, and deserves an answer, now fuck off! 

As Iarned in the TA.

 

  • Haha 1

Share this post


Link to post
Share on other sites
27 minutes ago, Ratman said:


Nice question OSM emoji106.png was the spillway constructed at the same time as the reservoir was formed?

No, apparently the spillway was only concreted 50 year ago.

  • Like 1

Share this post


Link to post
Share on other sites

The slipway that failed was an add on, installed by 1969 after the original failed in 1964.

Edited by eggsarascal
  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites
1 hour ago, difflock said:

No, apparently the spillway was only concreted 50 year ago.

Yes but did the dam not have a spillway before or was there an earlier spillway than the 1968 one?

 

Also while I'm asking; is there another outlet and to which canal or does it feed the canal system via the river Goyt?

 

I ask because the High peak canal is higher than the Goyt at Whalley station and it looks like there is a feed to it via a mixture of cut and pipe from the reservoir.

  • Like 1

Share this post


Link to post
Share on other sites
26 minutes ago, openspaceman said:

Yes but did the dam not have a spillway before or was there an earlier spillway than the 1968 one?

 

Also while I'm asking; is there another outlet and to which canal or does it feed the canal system via the river Goyt?

 

I ask because the High peak canal is higher than the Goyt at Whalley station and it looks like there is a feed to it via a mixture of cut and pipe from the reservoir.

In ma simple heid, there must always be provision for overspill, ergo a spillway, at any dam.

Share this post


Link to post
Share on other sites
29 minutes ago, openspaceman said:

 

 

Also while I'm asking; is there another outlet and to which canal or does it feed the canal system via the river Goyt?

 

I ask because the High peak canal is higher than the Goyt at Whalley station and it looks like there is a feed to it via a mixture of cut and pipe from the reservoir.

I've just asked this question on another forum where just about everyone is a liveaboard, I'm pretty sure the Goyt doesn't feed the cut. I stand to be corrected mind.

Share this post


Link to post
Share on other sites
55 minutes ago, eggsarascal said:

I'm pretty sure the Goyt doesn't feed the cut. I stand to be corrected mind.

Looking at the map  I think it is fed  directly from the middle of the dam by a cut running NE alongside reservoir road then under canal street to the terminus of transhipment warehouse.

 

This means the only viable way to discharge was into the todbrook under the dam and into the Goyt. Even if the canal system could take it this the  cut and pipe  wouldn't have capacity to take much and excess falls into the Goyt at the terminus weir anyway.

 

So the only way to get rid of the excess and not flood the Goyt would be to hold back outflow from the two other reservoirs to the South at Fernlee.

 

Apart from this gazing at the map my only direct experience is climbing and walking some ten miles to the west

Share this post


Link to post
Share on other sites

From a bloke that used to run a business on the cut in that area.

 

The Macc is fed by Toddbrook, not the river Goyt. Toddbrook is fed by a smaller stream, not the Goyt. Further south the other feeders are Sutton reservoir just south of Macclesfield, then Bosley reservoir. Given that there are no locks on this 21 mile stretch the 2 latter waters should be capable of keeping navigation open this year, given that both are full. Last year though, Bosley locks were closed for 3 months despite all 3 reservoirs being available.


 

Share this post


Link to post
Share on other sites

 

“We have got a three paragraph section which contains the bemusing phrase that ‘based on estimated annual probability of failure of the embankment the fatality rates are classed as being within a broadly acceptable number’. Could I ask what is a ‘broadly acceptable’ number of fatalities?”

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Featured Adverts

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.