Fish Spawning Troughs

Here's one of several Trout Breeding Troughs .... at least that's what we are led to believe. We inherited a few when we took ownership of the Mill, some of which were made of slate, some made of pottery. Each is a different shape. All have a bottom inlet for water and a top outlet. All were in the river silt of the wheel pit i.e. Zone A.

The reason for inclusion here, is that it could provide a link to previous use of this internal tailrace as a fish spawning bed for trout farming, or perhaps some other clues.