THE FRESH-WATER LOCHS OF SCOTLAND. 
261 
LOCHS OF THE LINNHE BASIN. 
In the j)aper dealing with the lochs of the Lochy basin published in 
the Geographical Journal in December, 1906, two lochs on the shores of 
Loch Linnhe, Loch Lim da Bhra and Loch nan Gabhar, were included. 
When sounding Loch nan Gabhar the surveyor was enabled to sound two 
little lochans lying about 2 miles to the east, near the Corran narrows at 
Ardgour, which proved to be relatively very deep. 
Loclian na h-Eaglais (see Plate CXX.).-— Lochan na h-Eaglais (or Church 
Loch) is the smaller and shallower of the two, and sub-circular in outline, 
about one-sixth of a mile in maximum diameter, and covering an area 
of about 10 acres. It forms a simple deep basin, with a maximum depth 
of 43 feet, the mean depth being estimated at 23 feet, or more than half 
the maximum depth, and the volume of water at 10 million cubic feet. 
The loch was surveyed on May 12, 1903, but the elevation could not be 
determined. The following temperatures taken in the deepest part show 
a range of only 2°*5 Fahr. : — 
Surface 
10 feet 
20 „ 
40 „ 
50°'0 Fahr. 
48°-5 „ 
47°-8 „ 
47°-5 „ 
Lochan Eion Mhic Alastair (see Plate CXX.) is also sub-circular in out- 
line, and a quarter of a mile in maximum diameter. There is a deep central 
basin with a maximum depth of 74 feet near the south-eastern end, where 
the slope is steep. The volume of water is estimated at 45 million cubic 
feet, and the mean depth at nearly 40 feet, or more than half the maximum. 
Considering its small area the loch is very deep, about 57 per cent, of the 
lake-floor being covered by more than 40 feet of water. The loch was 
surveyed on May 12, 1903, but the elevation could not be determined. 
The floods of the previous February had left a drift-mark 5^ feet above 
the level at the time of the survey, when the water was near its lowest 
level. The following temperatures taken in the deepest part of the loch 
show a range from surface to bottom of 3°'5 Fahr. : — 
Surface 
10 feet 
25 „ 
50 „ 
65 „ 
47°-0 Fahr. 
46P-8 „ 
46°-3 „ 
45°-0 „ 
43°-5 „ 
It is said to freeze over very seldom, and then only in extremely frosty 
weather. 
