text: Environment body Natural Resources Wales (NRW) said staff were erecting temporary flood barriers and carrying out other prevention work.
  An amber "be prepared" warning for persistent rain is in place for Gwynedd, Conwy and Denbighshire.
  The Met Office said up to 15cm (6ins) of rain could fall in north Wales.
  A yellow "be ready" warning is also in place for Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Anglesey, Powys and Wrexham.
  NRW  has issued river flood alerts due to rising levels caused by continuous rain since Friday.
  It said people should be prepared for flooding and it was monitoring the Dyfi, Elwy, Conwy and Vyrnwy river catchments.
  Scott Squires, of NRW, said: "Our staff are out working putting measures in place to prepare for flooding. This includes erecting temporary flood barriers to protect areas at risk in St Asaph and Llanrwst."
target: Work is being carried out to try to prevent flooding in parts of north Wales as heavy rainfall is forecast to continue into Sunday.