THE FRESH-WATER LOCHS OF SCOTLAND. 
127 
The mean depth is feet, and the volume of water 8 million cubic feet. 
The outflow is by a small burn flowing out over rock northward to the 
Blackmark burn. The loch was surveyed on July 29, 1903, when the 
elevation was 864'5 feet above the sea, as compared with 864*7 feet 
observed by the Ordnance Survey on May 15, 1894. A drift-mark was 
noticed a foot above the water. 
Lochrutton Loch (see Plate XL VI.). — A fair-sized loch used for the 
supply of water to the town of Dumfries, which lies about 5 miles to 
the north-east, while Milton Loeh in the Urr basin lies about 3 miles to 
the west. It trends nearly north and south, and is three-quarters of a 
mile in length, with a maximum breadth across the middle of half a mile, 
the mean breadth being a quarter of a mile. The superficial area is about 
129 acres, and the drainage area exceeds 3 square miles. The maximum 
depth of 58 feet was observed off the central part of the western shore, in 
close proximity to the islet called Dutton’s cairn ; but the deep water is 
of very limited extent, the loch as a whole being flat-bottomed in charaeter, 
varying in depth from 10 to 15 feet. In fact, two-thirds of tbe lake-floor 
is covered by water between 10 and 20 feet in depth, while only 4 per 
cent, is covered by more than 20 feet of water. The mean depth is 
estimated at 13 feet, and the volume of water at 73 million cubic feet. 
The loch was surveyed on May 1, 1905, when the elevation was 305*7 feet 
above the sea, as compared with 305*2 feet determined by the Ordnance 
Survey on November 6, 1898. The temperature of the water was 48°*0 Fahr. 
throughout. 
Lochaber Loch (see Plate XLVI.). — A small, picturesque loch less than 
2 miles south-east of Lochrutton Loch. The stony shores are wooded, and 
the surrounding hills steep, the outflow at the north-western angle being 
artificial. The loch is sub-triangular in outline, and over half a mile in 
length from north-west to south-east, the maximum breadth across the 
centre a quarter of a mile. The superficial area is about 52 acres, and the 
drainage area exceeds a square mile. The maximum depth of 55 feet was 
observed towards the south-eastern end, the mean depth being estimated 
at 20j feet, and the volume of water at 47 million cubic feet. The loch 
is simple in conformation, but the deeper water lies towards the southern 
end, the northern portion being shallow and weedy. About 71 per cent, 
of the lake-floor is covered by less than 25 feet of water. The loch was 
surveyed on May 4, 1905, but the elevation could not be determined ; on 
January 16, 1894, the Ordnance Survey found it to be 298 feet above the 
sea. Temperatures in the deepest part gave 48°*2 Fahr. at the surface, 
and 47°*0 at 45 feet. 
Loch Kindar (see Plate XLVI.). — This picturesque loch is situated 
about a mile inland from the Solway firth, at the mouth of the river Nith. 
The shores and islands are stony, the latter probably moraine mounds. 
