WATER CATCHMENT AEEAS IN SCOTLAND 265 



Total . . 3825 acres. 



There are two reservoirs, Glencorse and Loganlea. 

 According to Mr. Leslie, " the water draining into the 

 Glencorse reservoir is naturally free from peat, the water- 

 shed consisting of high hills covered with short grass. How- 

 ever, it becomes more mossy towards the upper reaches, so 

 that the water impounded in the Loganlea reservoir is at 

 times darkly coloured. The whole catchment area is under 

 hill grazing with the exception of 45 acres. The average 

 annual rainfall is 37*61 inches. The Glencorse gathering 

 ground would seem to be suitable for afforestation, but it is 

 not owned by the Edinburgh Corporation. The Water 

 Trustees only exercise over the area the general powers to 

 prevent fouling of the water that are conferred by the 

 Waterworks Clauses Act of 1847." 



The Moorfoot Waterworks consist of three areas : Glad- 

 house reservoir, with a catchment area of 6131 acres, 

 Tweedale Burn, 1337 acres, and Portmore reservoir with 

 610 acres, or 8078 acres in all. There are two compensa- 

 tion reservoirs, Roseberry and Edgelaw, the former on the 

 South Esk and the latter on its tributary, the Fullerton 

 Burn. The Moorfoot areas are not owned by the Edinburgh 

 Corporation, and no scheme for their afforestation has been 

 mooted. 



The Talla catchment area comprises 6180 acres, of which 

 5760 acres have been purchased by the Edinburgh Cor- 

 poration. Most of it is at a high elevation, as shown in 

 the following table : 



