StephenA

Never tie up in a lock, by all means use ropes but they should never be tied.

CRT seem to show locks west of Wigan as 62 feet. Pretty sure that's wrong, unless they've shrunk since those were our home waters

Yes, I think it was one of the wing walls, or a ledge that had narrowed it. Pretty sure it was discussed at length on here. Did BW/CRT ever formally notify about the, now fixed, issue at Hurleston

I think there is quite a bit of level monitoring on the Llangollen due to its dual purpose

Suspect its real. Tied to the ladder. Not sure why the guy at the top didn't drop the paddle and open one up at the bottom

I remember mooring up in Ware - was quite an experience : a car park full of pimped Fiestas with spotty youth in them, blondes with stilettos pushing babies round in prams looking at the drivers of the cars (possibly trying to work out which one was the father). Went to a good Restaurant. That was the year we attempted the Nene but there was no water.

Which Avon? There are two. I know one isn't EA, I suspect the other one isn't either. Lee Navigation is CRT Wey is National Trust Bridges can also belong to National Rail - even abandoned ones.

I certainly recall EA notices on the weirs on the Trent, especially the huge one at Holme Pierrepont. The Warwick Avon locks often have more than one section of weir - one solid one and a gated one.

I've done it once or twice - Bridgewater through Trafford Park. No other boats, no fishermen, solid stone banks.... You can get up to a good speed on the section of the L&L into Liverpool too.

Canal overflows taking off excess water do not affect your passage - if they do then you've got much more serious things to be worrying about. Heavy running lock by-washes can but if you want to put every single by-wash entry and exit on every single lock on the system your map is not going to be usable at all, and a by-wash might be running heavily, lightly or not at all, and not all by-washes are a problem - the ones at Tyrley are when you're entering the locks going up, but most of the ones on the Staffs & Worcs aren’t. I'm starting to suspect that your experience of canal boating in the UK is extremely limited, or non-existent.

Have you ever considered why no other canal mapping / tracking system shows lock by-washes or weirs / overflows on canals? CRT don't even show them on their maps

The only time I've had a problem with a weir on the canal ( they're usually about 6 feet long with maybe an inch of flow over them and are in the towpath) was the inlet of a lock by-wash on Johnson's Hillock with a lot of flow, got stuck against it entering the lock. Boat was never in risk of anything happening.

I notice you have all the CRT weirs marked - they're not really relevant on the canal, they're not like the weirs on the Trent or Severn

So do our maps, and yes a semi 3D view often works better for moving maps like in TomTom.

Its a very oddly angled view of the Isis Lock area of Oxford