THE FRESH- WATER LOCHS OF SCOTLAND. 219 



by Loch Scaslavat. The area 'is about 172 acres, and the volume 260 

 millions of cubic feet. It receives only local drainage from an area of 

 scarcely 1 mile square, and discharges northward by the Amhuinn 

 Benisval, a quarter of a mile long, into Loch Cro Criosdaig. The height 

 above sea-level was 278'0 feet on August 3, 1903. 



A series of temperatures showed a range of 3J Fahr. from surface to 

 bottom : 



Surface 58'2 Fahr. 



25 feet 58-0 



50 55-2 



90 ... 54-8 



Loch Bodavat (see Plate LXXXIX.) is a small loch to the north of 

 Loch Resort, into which it drains by a stream about a mile long. The 

 hills to the north-west rise some 300 feet, those on the south-east 200 

 feet, above the loch. In form it is narrow, with a sigmoid curvature, and 

 measures nearly a mile from north-east to south-west in a straight line 

 between the ends. The greatest breadth near the centre is a quarter of a 

 mile. The basin is simple, deepest in the middle, with the maximum of 

 46 feet a little east of the centre. The mean depth is 13 feet, the area 

 about 91 acres, and the volume 50 millions of cubic feet. It receives the 

 drainage of an area of 1^ square miles. The outflow is from the south-west 

 corner of the loch. The surface was 179'6 feet above sea-level on August 

 1, 1903. 



The range of temperature from surface to bottom was 5 Fahr. : 



Surface 60-0 Fahr. 



20 feet 59-0 



30 58-6 



35 55-7 



40 55-0 



From the following table it will be seen that in the thirty lochs under 

 consideration 2896 soundings were taken, and that the aggregate area 

 of the water-surface is 9| square miles, so that the average number of 

 soundings per square mile of surface is 300. The aggregate volume of 

 water contained in the lochs is estimated at 7409 millions of cubic feet. 

 The area drained by these lochs is 152 square miles, or nearly sixteen 

 times the area of the lochs. 



