The mean depth is less than 15 ft., with a maximum of 83 ft., the lake being thus one of the shallowest in Scotland.
This is the shallowest part, barely reaching a depth of 20 fathoms. It is being gradually 1 By the triangulation of 1840 its level was found to be 84 ft.
The city is built on sandy ground on both sides of the river and has a good harbour, which has been considerably improved by the Federal government; in 1907 the maximum draft that could be carried over the shallowest part of the channel was 14 ft.
The ice in the shallowest part was at this time several inches thinner than in the middle.
The pond had in the meanwhile skimmed over in the shadiest and shallowest coves, some days or even weeks before the general freezing.