NPRNTeitlMath O SaflePerthynasNPRN96459TeitlElan Valley Water Scheme, Birmingham Corporation Waterworks, Cwm ElanMath O Saflen/aPerthynasPart ofNPRN32521TeitlCraig Goch Dam, Elan Valley Water SchemeMath O Saflen/aPerthynasAssociated withNPRN309536TeitlCraig Goch Reservoir, Elan Valley Water SchemeMath O Saflen/aPerthynasAssociated with