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WATER CATCHMENT AREAS 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. Ine. 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 
R 
