WATER CATCHMENT AEEAS 241 



larger part of the catchment area, would prove advantageous 

 in every respect and ultimately profitable." 



The catchment area was subsequently reported upon by 

 Mr. H. A. Pritchard, Adviser in Forestry, who spent some 

 days in a detailed examination of the ground ; but whether 

 any steps will be taken for its afforestation after the war, 

 in the absence of ownership by the Corporation, is un- 

 certain. 



The population on the gathering ground, which contains 

 no arable land, is very small ; and the only measure taken 

 against possible contamination has been the carrying out of 

 some drainage to farms near Pentwyn reservoir. The water 

 is filtered. The rainfall on the catchment area is high, 

 ranging from 44 to 72 inches at Pentwyn reservoir. For 

 further particulars see Mr. T. F. Harvey, in Proc. Inc. Assoc. 

 Municipal and County Engineers, vol. 26, pp. 46-49, with 

 map and plans (1900). 



Neath Rural District Council obtains its water supply 

 from Ystradfellte reservoir on the river Dringarth in 

 Brecknockshire, with a gathering ground of 2250 acres, 

 between 1204 and 2000 feet elevation, all hill pasture and 

 moor, without habitations or farm-steadings. The Council 

 owns 85 acres only. The water is not filtered, but care- 

 takers make daily inspection of all sources of supply. 



Ebbw Vale Urban District Council obtains its water 

 supply from the Llangynidr and Carno reservoirs, on the 

 river Ebbw, with a gathering ground of 1530 acres on the 

 Llangynidr mountain in Brecknockshire, between 1356 and 

 1771 feet elevation. The area, none of which is owned 

 by the Council, is all hill pasture and moorland, without 

 habitations, farm-steadings, or plantations. The water is 

 filtered, but no special precautions are taken against con- 

 tamination on the gathering ground. The average annual 

 rainfall is 60 inches. 



Brynmawr Urban District Council obtains its water supply 

 from a gathering ground of 200 acres on Cirn Mountain 



