NPRNTeitlMath O SaflePerthynasNPRN96459TeitlElan Valley Water Scheme, Birmingham Corporation Waterworks, Cwm ElanMath O Saflen/aPerthynasPart ofNPRN32527TeitlElan Aqueduct: Foel Valve Tower; Garreg-Ddu Reservoir Tower, Foel TunnelMath O Saflen/aPerthynasAssociated withNPRN309541TeitlGarreg-Ddu Reservoir, Elan Valley Water SchemeMath O Saflen/aPerthynasAssociated withNPRN261575TeitlGarreg-Ddu Site Offices, Elan Valley Water SchemeMath O Saflen/aPerthynasAssociated withNPRN261574TeitlGarreg-Ddu Crusher YardMath O Saflen/aPerthynasAssociated withNPRN32518TeitlCaban Coch Reservoir, Elan Valley Water SchemeMath O Saflen/aPerthynasAssociated with