Building a Dam

Just after Twyford Bridge (177) I was told to moor up by some BW personnel. The reason wasn’t hard to spot – BW were making a dam:

 

So I took the opportunity to have a cup of tea and take more pictures:

it is scheduled to stay up for one month in order to do something with the weir bit:

The tarpaulin stretches half way across the canal under water:

these chaps are trampling it down:

With the tarpaulin under the water it would be easy for it to get caught up in a prop which is why one has to follow instructions:

I was quite pleased to have made it past

I wonder how long it will last or whether people obey the signage.