836 
BATHYMETRICAL SURVEY OF 
these two lochs lie partly in Ross-shire and partly in Inverness-shire ; 
four of the others (Lochs Lungard, Calavie, an Tachdaidh, and an Gead) 
are situated in Hoss-shire, and the remaining seven in Inverness-shire. 
The scenery of the district around the lochs is very fine, and the trout 
fishing in most of the lochs very good; some of them contain pike also. 
Loch Affric (see Plate LXXVIII.). — ^Loch Affric (or Aifaric) lies 
about 26 miles to the south-west of Beauly, which is the nearest railway 
station, and about 11 miles from Glen Affric Hotel at Cannich, the 
nearest house of entertainment. The loch trends in a west-south-west 
and east-north-easterly direction, and is nearly miles in length. 
It is broadest towards the western end, where the maximum breadth 
is nearly half a mile, narrowing gradually, though irregularly, on 
proceeding towards the eastern end, the mean breadth of the entire 
loch being a quarter of a mile. The superficial area is about 526 acres, 
or over four-fifths of a square mile, and the area drained by the 
loch is nearly 47 square miles. The maximum depth of 221 feet was 
observed near the centre of the loch. The volume of water is estimated 
at 2146 millions of cubic feet, and the mean depth at nearly 94 feet. 
The loch was surveyed on October 6 and 7, 1903, when the elevation 
of the lake-surface above the sea was determined, by levelling from 
bench-mark, as being 747*0 feet; when levelled by the officers of the 
Ordnance Survey on July 3, 1867, the elevation was found to be 
744*1 feet above sea-level, or 3 feet lower than in 1903. 
Loch Affric is quite simple in conformation, the deeper water 
occupying a central position, from which the bottom slopes upward to 
the shores on all sides. The 50-feet contour coincides approximately 
with the outline of the loch, enclosing a basin nearly 2 J miles in length, 
approaching comparatively close to the west end, but distant more than 
a quarter of a mile from the east end. Separated from this main 50- 
feet basin by shallower water is an isolated sounding of 54 feet, near 
the east end, where the main loch is joined by the little subsidiary basin 
called Loch Pollan Fearna, in which a maximum depth of 30 feet was 
observed. The 100-feet basin is 2J miles in length, and the 150-feet 
basin nearly IJ miles in length, approaching in each case nearer to the 
west end than to the east end. The 200-feet basin is about three-quarters 
of a mile in length, and is approximately equidistant from both ends of 
the loch, but the deepest sounding in 221 feet was taken towards the 
west end of the basin, and therefore nearer to the western end of the 
loch. A section along the centre of the loch from end to end is shown 
in the longitudinal section A-B on the map, and a section across the 
loch in the position of the deepest sounding is shown in cross-section 
C-D. This last section shows a very slight irregularity in the deepest 
part of the loch, where a sounding in 209 feet was taken between a 
sounding in 211 feet on the one hand, and the greatest depth of the 
