UK Caving

WHERE THE CAVES ARE - The Caving Regions => Mendip => Topic started by: Pegasus on October 05, 2020, 09:26:35 pm

Title: Video of recent flooding?
Post by: Pegasus on October 05, 2020, 09:26:35 pm
Hi All,

Any links to any flooding on Mendip recently?  Thank you :)
Title: Re: Video of recent flooding?
Post by: PaulW on October 05, 2020, 09:31:25 pm
we have footage, but its not yet been edited
Title: Re: Video of recent flooding?
Post by: The Old Ruminator on October 06, 2020, 08:18:15 am
A fair few images on Facebook and seen other stills on email. Mr O'Doc took stuff in Swildons on Sunday. Mrs O'Doc clearly not amused. I expect his dinner was in the dogs. Withyhill entrance pipe gushing a stream and all of that corner of the quarry flooded. Will take a look today. Also, it looked like Gough's entrance was in flood. What folk are willing to share here is another matter. Sensibly I was at home.
Title: Re: Video of recent flooding?
Post by: The Old Ruminator on October 06, 2020, 08:27:43 am
Almost on topic.

https://www.youtube.com/watch?v=QwsQ7JarjCE&feature=share
Title: Re: Video of recent flooding?
Post by: Pegasus on October 06, 2020, 09:10:45 am
we have footage, but its not yet been edited

Looking forward to seeing it  ;D :thumbsup:
Title: Re: Video of recent flooding?
Post by: mrodoc on October 06, 2020, 09:24:05 am
Hello, Pegasus. I got some stick for visiting the cave on Sunday although plenty of people afterwards declared they had been down in worse conditions or during rescues. I doubt it. We emerged through the hollow tree which I think provides an escape route at all times. Also the blockhouse can be boarded up temporarily providing an escape route. However I would add that going below the Water Chamber in Swildons (where we were) is very  risky in these conditions. As you will see from a forum posting one couple lost wellies and a kit bag. The film of them coming up the Water Rift is impressive. One of them had to free climb the Forty not a safe or easy  option for most cavers. I filmed us going in and how much the water had risen in 2 hours when we came out as well as some of the 'pinch points'. 
Title: Re: Video of recent flooding?
Post by: Pegasus on October 06, 2020, 09:28:22 am
Any chance we can see the films on UKC - not everyone is on FB.

Thanks so much - and glad you got out safe  ;D
Title: Re: Video of recent flooding?
Post by: mrodoc on October 06, 2020, 09:29:25 am
The film will go on Youtube so visible to all.
Title: Re: Video of recent flooding?
Post by: Pegasus on October 06, 2020, 10:03:40 am
The film will go on Youtube so visible to all.

Is there a link?  I've looked and can't find anything, thank you :)
Title: Re: Video of recent flooding?
Post by: mrodoc on October 06, 2020, 06:50:56 pm
Give me a day or two so that I can edit the film. I took clips throughout the clip and they need sorting out.
Title: Re: Video of recent flooding?
Post by: PaulW on October 06, 2020, 07:44:04 pm
24hrs later it was back to ankle deep, this was just before the highest water
Title: Re: Video of recent flooding?
Post by: mikem on October 07, 2020, 08:42:14 am
3 days later the water is still trying to escape from wookey:
https://flood-warning-information.service.gov.uk/station/3059
& Gough's:
https://flood-warning-information.service.gov.uk/station/3410
Whilst flow from Burrington has dropped off massively (although this is more affected by surface runoff):
https://flood-warning-information.service.gov.uk/station/3060
The Mells river has a lot of feeders on East Mendip:
https://flood-warning-information.service.gov.uk/station/3024?direction=u

Weather site in Bath shows almost 100mm of rain, which was mostly in first 4 days of Oct (so Thursday to Sunday). Unfortunately there don't appear to be any publicly available that are closer to Mendip & I don't know if this is PaulW, or someone else:
https://www.paulwilman.com/
Title: Re: Video of recent flooding?
Post by: The Old Ruminator on October 07, 2020, 09:50:00 am
On Tuesday the lake in Fairy Cave Quarry had mostly drained leaving a flood gully from Withyhill to Hillwithy. The sump in Hillwithy was frothy but the only active stream could be heard below boulders not far in from the entrance.
Title: Re: Video of recent flooding?
Post by: PaulW on October 07, 2020, 11:46:14 am
Mike,

No that's not me......

I use this in priddy, you an view river levels aswell
https://www.gaugemap.co.uk/#!Detail/8383/3726

Title: Re: Video of recent flooding?
Post by: mikem on October 07, 2020, 02:16:44 pm
Do you know whereabouts it is? Hopefully not the one in Texas:
https://www.wunderground.com/weather/us/tx/priddy/76870
Title: Re: Video of recent flooding?
Post by: north doodle on October 07, 2020, 02:44:16 pm
I live on Mendip about 4 miles from the Hunters and have a Davis weather station. Here are my rain results.

30-9-20     27.8 mm
1-10-20       4.2
2-10          58.6
3-10          37.4
4-10          55.8
5-10            4.2
6-10          27.8
               
Total         215.8 mm ( 8.5 inches )         No rain today so far  !!
Title: Re: Video of recent flooding?
Post by: mikem on October 07, 2020, 02:53:20 pm
Gaugemap use the data from EA:
https://defradigital.blog.gov.uk/2017/02/10/just-launched-near-real-time-rainfall-api/

north doodle - is that a tipping, or other sort of, gauge? (EA gives about 170 for same period)
Title: Re: Video of recent flooding?
Post by: mrodoc on October 07, 2020, 11:08:15 pm
I have done a quick and dirty edit of the film I took. For the technically minded I used an Olympus TG6 and the two others carried underwater video lights (plus our headlamps of course). It can be seen here: https://youtu.be/32_eN3MzzJY
Title: Re: Video of recent flooding?
Post by: Pitlamp on October 08, 2020, 11:13:22 am
Almost like a Dales cave in normal conditions . . . .    :tease:

Joking apart, that's a cracking bit of footage mrodoc - thoroughly enjoyed watching it.
I'd forgotten what an excellent trip Swildon's is. Well. "trips" would be a better word, as there's so much to it.
Title: Re: Video of recent flooding?
Post by: Brains on October 08, 2020, 11:14:07 am
Who says Mendip caves and cavers are are muddy? Came out of there lovely and clean!
Awesome footage  ;D
Title: Re: Video of recent flooding?
Post by: Duck ditch on October 08, 2020, 12:00:07 pm
Excellent footage.  I believe the phrase is:  sporting when wet.
Title: Re: Video of recent flooding?
Post by: royfellows on October 08, 2020, 12:13:15 pm
That really is good. Considering that it was 'casually' produced as you infer, why is it that a lot of other peoples videos are so poor by comparison.
A really exciting trip as well, nice one.
Title: Re: Video of recent flooding?
Post by: Joe Duxbury on October 08, 2020, 02:36:44 pm
Hmmm, a trifle damp. How long was it between going in, with the floor of the blockhouse still above water, and coming back out, when the water was gushing into the entrance?
Title: Re: Video of recent flooding?
Post by: Pegasus on October 08, 2020, 03:26:30 pm
I have done a quick and dirty edit of the film I took. For the technically minded I used an Olympus TG6 and the two others carried underwater video lights (plus our headlamps of course). It can be seen here: https://youtu.be/32_eN3MzzJY

Fabulous, thank you!  ;D :thumbsup:
Title: Re: Video of recent flooding?
Post by: JohnMCooper on October 08, 2020, 04:20:06 pm
Quote
How long was it between going in, with the floor of the blockhouse still above water, and coming back out, when the water was gushing into the entrance?

Four of us went in at 10.30 with the intention of checking the Mud Sump to see if it was being filled up by water resurging from the Moles' Dig. At that time the water was nearly at the top of the BOTTOM pipe. The first person turned round at the start of the Water Rift (the bit at 3 minutes in). We put a handline down the drop at the old Forty. The Twenty was sporting as were the Double Pots. At this point the second person said NO to descending the second one so the two of us at the bottom turned round and we all came out. We met 2 people in the Water Chamber who said they had come in the Wet Way but would not advise going out that way. They were the 2 people (MCG?) seen coming out at 3 mins into the video. We also met 2 people at the top of Jacob's Ladder who told us the water was part way up the TOP pipe. Jacob's Ladder was a nice waterfall (1 minute into video shows the other 2 from the MCG party coming up it). We got out about noon. At that point the water was halfway up the TOP pipe, about an inch below the level at the start of the video as there was no puddle to walk through to get to the entrance. It was rising quickly.  We met Pete Glanvill's group at the entrance and chatted for a few minutes. In that time the water had risen to cover the path. Don't know what time the other groups came out.

I believe there were at least 2 parties who looked at the entrance and decided against descending.
Title: Re: Video of recent flooding?
Post by: mrodoc on October 08, 2020, 04:36:45 pm
I can tell you exactly when I get the videos back as most cameras record timing but unfortunately the hard drives went off this afternoon with the guy who is revamping my server. This sort of data can be very handy - we used it a while back to ascertain which Green Holes I had taken photos in on a diving trip in Ireland a while back. I can give you an estimate that between the time we went in when the water had just started to flow through the uppermost pipe  and when we came out to find the water entering the blockhouse was about 2  hours maximum as all we did was go down the Dry Way, pause for ten minutes in the Old Grotto while we attempted to use a jet washer on the stal (as you do!) and failed due to the filter blocking in the turbid water., visit the Water chamber, watch the pair struggling then after a brief visit to the Lavatory Pan came out.
Title: Re: Video of recent flooding?
Post by: Alex on October 08, 2020, 05:05:43 pm
Wow that's some scarey stuff, especially the exit. The final version can do with some dramatic music and then you will be famous like that guy we once took caving (Never again) who got stuck in a tube and almost got half a million u-tube hits lol.
Title: Re: Video of recent flooding?
Post by: north doodle on October 08, 2020, 06:24:07 pm
Hi Mike

My Davis Vantage Vue w/station has a tipping rain gauge.
 Where were the EA figures recorded?
As a comparison on 4 October  GaugeMap shows= Priddy 45.8mm ; Stoke Bottom Farm 28.6mm; Grove Farm 44.2mm.
 mine 55.8mm

This shows big variations within a few miles
Title: Re: Video of recent flooding?
Post by: mrodoc on October 08, 2020, 06:37:00 pm
I would agree with the comment regarding variations.
Title: Re: Video of recent flooding?
Post by: PeteHall on October 08, 2020, 07:00:04 pm
Wow that's some scarey stuff, especially the exit. The final version can do with some dramatic music and then you will be famous like that guy we once took caving (Never again) who got stuck in a tube and almost got half a million u-tube hits lol.
Come on then, Alex. We'd best have a link to that  ;D
Title: Re: Video of recent flooding?
Post by: mikem on October 08, 2020, 07:25:18 pm
That really is good. Considering that it was 'casually' produced as you infer, why is it that a lot of other peoples videos are so poor by comparison.
A really exciting trip as well, nice one.
Usually lighting...

Yes there is variation across quite small distances, but the position of the gauge can also affect how much "misses" it, or if the wind tips it before full, depending on prevailing direction etc.
Title: Re: Video of recent flooding?
Post by: PaulW on October 08, 2020, 10:46:24 pm
Priddy rainfall
https://www.gaugemap.co.uk/#!Detail/8383/3726
Title: Re: Video of recent flooding?
Post by: ZombieCake on October 10, 2020, 12:14:10 am
Quote
underwater video lights
Hi, Mr O'Doc could I ask what underwater lights you were using? 
Title: Re: Video of recent flooding?
Post by: mrodoc on October 10, 2020, 07:07:31 pm
It is called a Black Molly.
Title: Re: Video of recent flooding?
Post by: PaulW on October 10, 2020, 07:58:44 pm
Sam's video of our trip to swildons that day

  https://youtu.be/e4GYU7eAqVU    (https://youtu.be/e4GYU7eAqVU)
Title: Re: Video of recent flooding?
Post by: mrodoc on October 10, 2020, 11:40:31 pm
Perhaps we can combine footage some time and put together something for a future HE with voice overs from the participants.
Title: Re: Video of recent flooding?
Post by: PeteHall on October 11, 2020, 08:01:30 am
I assume people have been since. I wonder if anything has moved...
Title: Re: Video of recent flooding?
Post by: mrodoc on October 11, 2020, 10:18:10 am
My feelings as well. I have incorporated observations and warnings into my Descent article.
Title: Re: Video of recent flooding?
Post by: rhychydwr1 on October 11, 2020, 10:38:13 am
It would be helpful if you could name this parts of the cave and the cavers moved through the various chambers etc.
Title: Re: Video of recent flooding?
Post by: PaulW on October 11, 2020, 11:46:30 am
I know some others went earlier in the week as the lost kit was found. Mon pm, 24hrs later the stream outside was back to ankle deep
Title: Re: Video of recent flooding?
Post by: PeteHall on October 11, 2020, 03:09:25 pm
From the flow going in, I wouldn't be surprised if the passage linking to the bottom of Jacob's Ladder had reopened. It's not on the survey, but opened itself a few years ago, before filling back up again...
Hoping to get down tonight, so will report back if I notice anything of interest.