• The Derbyshire Caver, No. 158

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How does Bagshawe Cavern flood?

tdobson

Member
This is probably mainly for the Eldon here, but other people with an above average understanding also welcome.

I'd say I know Bagshawe main series fairly well 😅 and yet the hydrology continues to surprise me.

I'm trying to understand how it floods:

Water comes up the Glory Hole and into the Hippodrome, creating a river through the main series and into the Dungeon?

Does water also back up from the main series stream (beyond the duck), and back up the muddy crawl back to the hippodrome too? My gut says that I know it backs up enough to sump the duck at the bottom of that slope, but I'm less sure it backs up all the way?

Has anyone been to the hippodrome when it's flooding? (Not recommended - entrapment/drowning risk - in case a casual reader needs that pointing out)

Some more stupid questions:
* Where does the water from the Glory Hole come from? (I know it's been dived to a choke)
* Where does the water from the main series stream come from?
* And where does the water at the main series sump reappear?
* If I understand rightly, the recent impressive connection from the Bradwell resurgence to Bagshawe was to the lower series far reaches?
* Does it flood to the roof of the top of the Hippodrome? (My gut is that that's not believed to be the case)

Lastly and most on the nose: when does it flood?

Despite all these questions, I've been there when it's flooding, and it appears to have its own mind about when to flood.

You can have days of heavy rain, and Blackpool sands is dry, or a wee bit of drizzle and a raging torrent at the dungeon. Perhaps a exaggeration, but it's not a pattern I recognise yet.

Generally asking because these questions have kept me awake for the last 45 mins, and cos I'd prefer to learn the answers without getting wet and/or dead.

Thanks in advance
 
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