The header image of tank and overflow structure, in the former lake.

The large pieces of masonry which are all around the remains of this structure suggest that it was quite a major piece of engineering.

Area Denoted by (A) on the Plan of the Lake

View of the Overflow Tank from the side (5)

The system appeared to have collected overflow water from the lake edge, which then passed along a small culvert, into the tank located along, but above, the relief channel. There is a further outlet from the tank, presumably into the channel. The inlet is shown highlighted on the right in the foreground and the tank is in the distance, again highlighted.

Coincidentally the Victorian artists sketch of the Boathouse and Lake, appears to confirm the location of the inlet, as shown in the detail below.

The inlet sluice gate would have been held in place by water pressure and lifted with a rope, threaded through the ring in the top of the stone, as shown below.

The mechanics of the overflow may require a further visit with a trowel to investigate its workings!

Continued on Lake 5.

Former Lake Page on the old site