290 • FOKESTS, WOODS, AND TKEES 



Portrush : gathering ground of 350 acres, all arable 

 land and pasture, between 200 and 425 feet elevation, in 

 the townlands of Craigahulliar, Knockertotan, Slimag, 

 Crossreagh, and Cor bally. There are 8 dwelling-houses, 

 with farm-steadings attached, on the area, no part of which 

 is owned by the Council. " There are many springs on the 

 area, which are carefully collected and piped to the reservoir. 

 The drainage from some of the arable land and farm-stead- 

 ings is rejected. Filtration is good." 



Portstewart : gathering ground of 183^ acres in South 

 Mullaghacall, Garrylaban, Cappagh Beg, East Crossreagh, 

 and West Tullaghmurry townlands, between 50 and 150 

 feet elevation, all arable land except 2 acres of plantations, 

 with two farmhouses upon it. No special measures to 

 prevent contamination are taken on the gathering ground, 

 none of which is owned by the Council ; but the water is 

 filtered. 



Londonderry *: water supply from three sources : 



1. Creggan Valley, about two miles west of the city; 

 three reservoirs ; catchment area of 6 5 acres, between 300 

 and 700 feet altitude, all agricultural land, with a number 

 of inhabited houses. 



2. Killea Valley, south-west of the last ; storage reser- 

 voir ; catchment area of 456 acres, largely hill grazing, 

 but with some arable land. 



3. Tamneymore, south of the city ; two storage reser- 

 voirs ; supply partly from springs situated in agricultural 

 land, partly from perforated subsoil conduits in catchment 

 areas. 



The Corporation appear to own only the sites of the 

 reservoirs. All reports show that the water supply is of 

 doubtful quality, the areas being very liable to con- 

 tamination. 



The Londonderry Corporation have in Parliament during 

 the present session (1918) a scheme for obtaining a new 

 water supply from the Glens of Banagher, in the Sperrin 

 Mountains. It is proposed to construct two reservoirs, one 



