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Post by Telemachus on Aug 17, 2019 14:07:35 GMT
Yes it’s up a bit, but not much from normal level. Was around or just under 1m for past few days, now about 1.15. I’m not sure what the zero datum is, is it weir top?
just passed the Nidd entrance - quite a flow coming in there. Up to 7.3 mph now!
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Post by Jim on Aug 17, 2019 14:17:48 GMT
Stopped at Linton lock for water. There is an interesting hydro scheme here - an Archimedes screw type turbine than generates up to 380kw. One has to wonder why more river locks don’t have such things. We have one of those in the River Roch next to the council offices, great idea but it didn't take kindly to the big flood Boxing Day 15, you know the one the Fox brought down on us.
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Post by TonyDunkley on Aug 17, 2019 14:33:59 GMT
. . . . . . I’m not sure what the zero datum is, is it weir top? No, . . it's the EA's recorder/gauge datum for any given locality, which is in turn related back to Ordnance Datum (Newlyn).
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Post by Telemachus on Aug 17, 2019 14:39:49 GMT
. . . . . . I’m not sure what the zero datum is, is it weir top? No, . . it's the EA's recorder/gauge datum for any given locality, which is in turn related back to Ordnance Datum (Newlyn). So can one work out what say the 1m at upstream naburn means in terms of height of water over the top of the weir?
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Post by Deleted on Aug 17, 2019 14:53:19 GMT
Stopped at Linton lock for water. There is an interesting hydro scheme here - an Archimedes screw type turbine than generates up to 380kw. One has to wonder why more river locks don’t have such things. Just about every lock on the River Sarth in France has one of those. The river here had been lowered for maintenance purposes when this was taken. And on the Tees at the barrage near the lock there they have a set of them that run in both directions, one way to generate electricity and the other way to push the water around the canoe slalom course when needed.
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Post by TonyDunkley on Aug 17, 2019 15:09:11 GMT
No, . . it's the EA's recorder/gauge datum for any given locality, which is in turn related back to Ordnance Datum (Newlyn). So can one work out what say the 1m at upstream naburn means in terms of height of water over the top of the weir? Yes, . . you take your shoes and socks off, roll your trousers up, wade out onto the weir cill with a length of stick and a steel tape, dip and measure the depth of water over the weir crest and make a note of that, and the time. Then you wade back to the bank, dry your legs and feet, roll your trousers back down, and go and find out what the reading was on the nearest EA recorder/gauge when you were farting about with the tape and a stick !
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Post by Telemachus on Aug 17, 2019 15:50:30 GMT
So can one work out what say the 1m at upstream naburn means in terms of height of water over the top of the weir? Yes, . . you take your shoes and socks off, roll your trousers up, wade out onto the weir cill with a length of stick and a steel tape, dip and measure the depth of water over the weir crest and make a note of that, and the time. Then you wade back to the bank, dry your legs and feet, roll your trousers back down, and go and find out what the reading was on the nearest EA recorder/gauge when you were farting about with the tape and a stick ! Maybe I won’t bother then!
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Post by Telemachus on Aug 17, 2019 16:18:27 GMT
Had to stop at York for a beer. Only seen one boat moving today - until we got to York, now it’s seething!
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Post by thebfg on Aug 17, 2019 19:47:30 GMT
Yes, . . you take your shoes and socks off, roll your trousers up, wade out onto the weir cill with a length of stick and a steel tape, dip and measure the depth of water over the weir crest and make a note of that, and the time. Then you wade back to the bank, dry your legs and feet, roll your trousers back down, and go and find out what the reading was on the nearest EA recorder/gauge when you were farting about with the tape and a stick ! Maybe I won’t bother then! That's just lazy.
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Post by Deleted on Aug 17, 2019 20:46:54 GMT
I never quite understood the point of Francis lights on the front of narrow boats.
They are hand operated directional search lights with adjustable beam focusing.
Butler thing is it ?
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Post by Telemachus on Aug 17, 2019 21:12:37 GMT
I never quite understood the point of Francis lights on the front of narrow boats. They are hand operated directional search lights with adjustable beam focusing. Butler thing is it ? I suspect there are quite a lot of other things you don’t understand the point of. Never mind! For your elucidation a Francis light on a narrowboat has the following points: 1/ it is very pretty and people “oooh” and “aaah” when they see it. This is very important. 2/ being brass, it requires constant polishing. This is therapeutic. 3/ being de-focusable it can illuminate the sides and roof of a tunnel without projecting much light directly forward, thus not dazzling an oncoming boat. This is considerate. 4/ being focusable it can be concentrated to a pencil beam of high energy light, which is useful for burning the brains of any grumpy fishermen who don’t return our cheery wave. This is karma.
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Post by Telemachus on Aug 18, 2019 10:54:57 GMT
Screaming back to Selby this morning, 7.5 mph on the ebb + fresh, Cawood swing bridge duly swung, they had 2m, we are 2.25m including flowers. Next stop Selby bridges...
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Post by Deleted on Aug 18, 2019 11:20:01 GMT
OK sorry to be a bore but what are the imitation rivets for?
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Post by Mr Stabby on Aug 18, 2019 11:38:04 GMT
OK sorry to be a bore but what are the imitation rivets for? Twat indicators.
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Post by Telemachus on Aug 18, 2019 12:00:48 GMT
OK sorry to be a bore but what are the imitation rivets for? Makes the boat go faster. Like the little blobs on gold balls.
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