336 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 Ross-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 LXX VIII.). Loch Affric (or Affaric) 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 3J 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 2J 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 H 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 



