THE FRESH- WATER LOCHS OF SCOTLAND. 
211 
the lower end, and 9 feet near the upper end. The mean depth is nearly 
4 feet, the area 43 acres, and the volume, 7 millions of cubic feet, shows 
it to be the smallest loch surveyed in Lewis. A small burn flows east 
to Loch nan Deaspoirt. The height above sea-level was 82*9 feet on 
August 14, 1903. 
Loch a' Chlachain (see Plate LXXXI.) is a narrow loch about 4 miles 
west of Stornoway, the land surface on which it lies rising gradually to 
the west. In form it is narrow and oblong, measuring fully half a mile in 
length from east to west, and one-fifth of a mile in breadth. It is shallow 
and nearly flat-bottomed, with only a very small area near the east end 
over 10 feet deep, and the maximum 11 feet. The mean depth is feet, 
the area 45 acres, and the volume 1 1 millions of cubic feet. The drainage 
area is extensive, including the whole upper waters of the Creed and 
several lochs, and measures 12 square miles. The loch is an expansion of 
the Creed, which flow in at the west end, and out at the east. The 
surface was 21P6 feet above sea-level on July 10, 1903. The temperature 
at the surface was 56°*9 Fahr., and at 10 feet 56°*8. 
Loch Vatandip (see Plate LXXXI.) is a small narrow loch 4 miles 
west of Stornoway. The hills to north and south rise about 100 feet above 
the loch. TheTength from east to west is exactly a mile, and the greatest 
breadth one-fifth of a mile. It is a simple, shallow, and even basin, the 
10-feet contour closely following the shore, the bottom nearly flat, and 
the maximum depth of 17 feet near the east end. Very narrow for 
two-thirds of its length, it expands, one-third of a mile from the west end, 
into a triangular portion. The mean depth is 10 feet, the area about 64 
acres, and the volume 27 millions of cubic feet. The drainage area is less 
than half a square mile. From the west end a small burn flows west into 
the river Creed. When surveyed on July 11, 1903, the surface was 275-9 
feet above sea-level. 
Loch Airidli na Lie (see Plate LXXXII.) is a small narrow loch, li 
miles west of Stornoway. Low hills lie to north and south : on the south 
some 100 feet, on the north 150 feet, above the level of the water. It 
measures three-quarters of a mile from east to west, and one-sixth of a 
mile in greatest breadth, near the lower end. The bottom is regular and 
even, the sides sloping gently to the middle, and the depth gradually 
increasing from west to east, with the maximum of 19 feet near the 
outflow. The mean depth is 9 feet, the area about 47 acres, and the 
volume 19 millions of cubic feet. The area draining into the loch is 
nearly 3 square miles, a considerable stream, the Amhuinn a’ Ghlinn 
Mhoir, flowing in at the west end. The Bayhead river flows out eastward 
through the town of Stornoway. The level of the loch on the date of the 
survey, July 9, 1903, was 178*7 feet. The surface temperature was 55°‘8 
Fahr., at 15 feet 55°*7. 
