Newbie here.
I take it you know about this site, I used to use it a lot when I was travelling about in my Land Rovers
http://www.wetroads.co.uk/As as for deep water?
How about this idiot in the floods a few years ago at Castleford???
He's on the 'Barnsdale Road', which is the 'Roman Road' that goes from the bridge over the River Aire, up towards Peckfield Bar & Aberford
Then again, he's probably not a cyclist, just a 'bloke on a bike'
If there was a manhole cover blown off by water pressure (before the levels rose so high) he'd have never be seen again
Zooomed in image
Road from start of closure
He was walking/struggling through half-a-mile of water