It is close to a weir over which the Dee falls.

Here there is a little floodgate, through which water rushes from an oblong pond or reservoir, fed by water from a corner of the upper part of the weir.

On the left, or south-west side, is a mound of earth fenced with stones which is the commencement of the bank of the canal.

The pond or reservoir above the floodgate is separated from the weir by a stone wall on the left, or south-west side.

This pond has two floodgates, the one already mentioned, which opens into the canal, and another, on the other side of the stone mound, opening to the lower part of the weir.
Whenever, as a man told me who was standing near, it is necessary to lay the bed of the canal dry, in the immediate neighbourhood for the purpose of making repairs, the floodgate to the canal is closed, and the one to the lower part of the weir is opened, and then the water from the pond flows into the Dee, whilst a sluice, near the first lock, lets out the water of the canal into the river.