92 



BATHYMETRICAL SUKVEY OF 



to 50J square miles, and includes many lochs (Regar, Macaterick, Finlas, 

 Muck, Derclach, Enoch, etc.). There are many large feeders : Gala Lane 

 at the head of the loch, Carrick Lane from Lochs Regar and Macaterick, 

 Garpel burn from Lochs Finlas and Derclach on the west, and the Muck 

 burn from Loch Muck on the east. The outflow by the river Boon, now 

 controlled by a dam and sluice, is through a rocky channel, on the east 

 side of which rise high cliffs. 



English Milea 



I E 3 4 8 10 16 



FIG. 10. INDEX MAP OF THE BOON, GIRVAN, AND STINCHAB BASINS. 



The basin of Loch Doon is very irregular. The 25-feet contour, 

 though continuous nearly from end to end of the loch, is much interfered 

 with by groups of islands and shoals, and there are two separate basins 

 over 50 feet in depth. The southern and narrower portion of the loch, 

 running between high hills, is deepest. Here the 50-feet area is 1J miles 

 long, the 75-feet area half a mile long, and a very small area, founded on 

 a single sounding, reaches 100 feet in depth. Northward the loch shallows 

 to 28 feet, and deepens again to the second area of over 50 feet, which is 



