WATER CATCHMENT AREAS 205 



bourhood of the water courses, to guard against pollution. 

 Practically no difficulty has arisen since the establishment 

 of the Thrybergh reservoir, from the point of view of pollu- 

 tion ; and any small difficulty which may arise from time 

 to time has up till now been settled mutually." 



Guisborough Water Company obtain their supply from the 

 Wentworth Plantation reservoir, with a gathering ground 

 of 550 acres, between 500 and 750 feet elevation. The 

 area, which is all moorland, except 50 acres of planta- 

 tions, is without habitations or farmsteads. The water 

 is filtered, and no other measures are taken against con- 

 tamination. 



Yeadon Waterworks Company obtain their supply from 

 Reva reservoir, with a gathering ground of 720 acres on 

 Hawks worth Moor, between 750 and 800 feet elevation, all 

 hill pasture and moorland and without plantations. The 

 Company have water rights over the area, of which they 

 own only 30 acres. There is one farmstead and two 

 cottages on the gathering ground. The water is filtered. 



Thirsk District Water Company, Ltd., obtain their water 

 supply from a gathering ground at Boltby, 800 acres in 

 extent, between 650 and 1200 feet elevation. The whole 

 area is covered with heather and bracken, and is without 

 habitations or plantations, none of it being owned by the 

 Company. There is nothing to contaminate the water, 

 which is strained but not filtered. 



Cleveland Water Company obtain their water supply 

 in part from a gathering ground of 1150 acres in Stanghow 

 and Moorsholm, between 650 and 920 feet elevation. The 

 Company have no rights over the area, except a perpetual 

 easement over 42 acres covered by the Lock wood Moorland 

 reservoir and filter beds. The gathering ground is all 

 moorland without habitations or plantations, and there is 

 no chance of contamination of the water. 



